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id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Lumbricals of the hand</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 18 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-18" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">18 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%A7%D9%84%D8%B9%D8%B6%D9%84%D8%A7%D8%AA_%D8%A7%D9%84%D8%AE%D8%B1%D8%A7%D8%B7%D9%8A%D9%86%D9%8A%D8%A9_%D9%84%D9%84%D9%8A%D8%AF" title="العضلات الخراطينية لليد – Arabic" lang="ar" hreflang="ar" data-title="العضلات الخراطينية لليد" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/M%C3%BAsculs_lumbricals_de_la_m%C3%A0" title="Músculs lumbricals de la mà – Catalan" lang="ca" hreflang="ca" data-title="Músculs lumbricals de la mà" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Musculi_lumbricales_(Hand)" title="Musculi lumbricales (Hand) – German" lang="de" hreflang="de" data-title="Musculi lumbricales (Hand)" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/M%C3%BAsculos_lumbricales_de_la_mano" title="Músculos lumbricales de la mano – Spanish" lang="es" hreflang="es" data-title="Músculos lumbricales de la mano" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%A7%D9%87%DB%8C%DA%86%D9%87%E2%80%8C%D9%87%D8%A7%DB%8C_%DA%A9%D8%B1%D9%85%DB%8C_%D8%AF%D8%B3%D8%AA" title="ماهیچه‌های کرمی دست – Persian" lang="fa" hreflang="fa" data-title="ماهیچه‌های کرمی دست" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Muscle_lombrical_de_la_main" title="Muscle lombrical de la main – French" lang="fr" hreflang="fr" data-title="Muscle lombrical de la main" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/M%C3%BAsculos_lumbricais_da_man" title="Músculos lumbricais da man – Galician" lang="gl" hreflang="gl" data-title="Músculos lumbricais da man" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B2%8C%EB%A0%88%EA%B7%BC_(%EC%86%90)" title="벌레근 (손) – Korean" lang="ko" hreflang="ko" data-title="벌레근 (손)" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Muscoli_lombricali_della_mano" title="Muscoli lombricali della mano – Italian" lang="it" hreflang="it" data-title="Muscoli lombricali della mano" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%94%D7%A9%D7%A8%D7%99%D7%A8%D7%99%D7%9D_%D7%94%D7%AA%D7%95%D7%9C%D7%A2%D7%99%D7%99%D7%9D_(%D7%9B%D7%A3_%D7%99%D7%93)" title="השרירים התולעיים (כף יד) – Hebrew" lang="he" hreflang="he" data-title="השרירים התולעיים (כף יד)" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Musculi_lumbricales_manus" title="Musculi lumbricales manus – Hungarian" lang="hu" hreflang="hu" data-title="Musculi lumbricales manus" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Musculi_lumbricales_manus" title="Musculi lumbricales manus – Dutch" lang="nl" hreflang="nl" data-title="Musculi lumbricales manus" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E8%99%AB%E6%A7%98%E7%AD%8B" title="虫様筋 – Japanese" lang="ja" hreflang="ja" data-title="虫様筋" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Mi%C4%99%C5%9Bnie_glistowate_r%C4%99ki" title="Mięśnie glistowate ręki – Polish" lang="pl" hreflang="pl" data-title="Mięśnie glistowate ręki" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/M%C3%BAsculos_lumbricais_(m%C3%A3o)" title="Músculos lumbricais (mão) – Portuguese" lang="pt" hreflang="pt" data-title="Músculos lumbricais (mão)" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Mu%C8%99chii_lombricali_ai_m%C3%A2inii" title="Mușchii lombricali ai mâinii – Romanian" lang="ro" hreflang="ro" data-title="Mușchii lombricali ai mâinii" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A7%D0%B5%D1%80%D0%B2%D0%B5%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%BD%D1%8B%D0%B5_%D0%BC%D1%8B%D1%88%D1%86%D1%8B_%D0%BA%D0%B8%D1%81%D1%82%D0%B8" title="Червеобразные мышцы кисти – Russian" lang="ru" hreflang="ru" data-title="Червеобразные мышцы кисти" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Lumbrikalmuskler" title="Lumbrikalmuskler – Swedish" lang="sv" hreflang="sv" data-title="Lumbrikalmuskler" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1394547#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav 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searchaux" style="display:none">Muscles in the central compartment of the hand</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For the foot muscles, see <a href="/wiki/Lumbrical_muscle_of_the_foot" class="mw-redirect" title="Lumbrical muscle of the foot">Lumbrical muscle of the foot</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><tbody><tr><th colspan="2" class="infobox-above" style="background-color:antiquewhite">Lumbricals of the hand</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Lumbricales_(hand).png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Lumbricales_%28hand%29.png/250px-Lumbricales_%28hand%29.png" decoding="async" width="250" height="345" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Lumbricales_%28hand%29.png/375px-Lumbricales_%28hand%29.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f9/Lumbricales_%28hand%29.png/500px-Lumbricales_%28hand%29.png 2x" data-file-width="652" data-file-height="900" /></a></span><div class="infobox-caption">The muscles of the left hand. Palmar surface. (first lumbricalis labeled at bottom right of muscular group)</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Details</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Anatomical_terms_of_muscle#Insertion_and_origin" title="Anatomical terms of muscle">Origin</a></th><td class="infobox-data"><a href="/wiki/Flexor_digitorum_profundus" class="mw-redirect" title="Flexor digitorum profundus">Flexor digitorum profundus</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Anatomical_terms_of_muscle#Insertion_and_origin" title="Anatomical terms of muscle">Insertion</a></th><td class="infobox-data"><a href="/wiki/Extensor_expansion" title="Extensor expansion">Extensor expansion</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Artery" title="Artery">Artery</a></th><td class="infobox-data"><a href="/wiki/Superficial_palmar_arch" title="Superficial palmar arch">Superficial palmar arch</a>, <a href="/wiki/Common_palmar_digital_arteries" title="Common palmar digital arteries">common palmar digital arteries</a>, <a href="/wiki/Deep_palmar_arch" title="Deep palmar arch">deep palmar arch</a>, <a href="/wiki/Dorsal_digital_arteries_of_hand" title="Dorsal digital arteries of hand">dorsal digital artery</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Nerve" title="Nerve">Nerve</a></th><td class="infobox-data">Third and fourth <a href="/wiki/Deep_branch_of_ulnar_nerve" title="Deep branch of ulnar nerve">deep branch of ulnar nerve</a>, first and second <a href="/wiki/Median_nerve" title="Median nerve">median nerve</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Anatomical_terms_of_motion" title="Anatomical terms of motion">Actions</a></th><td class="infobox-data"><a href="/wiki/Flexion" class="mw-redirect" title="Flexion">Flex</a> <a href="/wiki/Metacarpophalangeal_joint" title="Metacarpophalangeal joint">metacarpophalangeal joints</a>, <a href="/wiki/Extension_(kinesiology)" class="mw-redirect" title="Extension (kinesiology)">extend</a> <a href="/wiki/Interphalangeal_articulations_of_hand" class="mw-redirect" title="Interphalangeal articulations of hand">interphalangeal joints</a></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Identifiers</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Latin" title="Latin">Latin</a></th><td class="infobox-data"><i>musculi lumbricales manus</i></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Terminologia_Anatomica" title="Terminologia Anatomica">TA98</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://ifaa.unifr.ch/Public/EntryPage/TA98%20Tree/Entity%20TA98%20EN/04.6.02.065%20Entity%20TA98%20EN.htm">A04.6.02.065</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Terminologia_Anatomica" title="Terminologia Anatomica">TA2</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://ta2viewer.openanatomy.org/?id=2532">2532</a></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Foundational_Model_of_Anatomy" title="Foundational Model of Anatomy">FMA</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://bioportal.bioontology.org/ontologies/FMA/?p=classes&conceptid=http%3A%2F%2Fpurl.org%2Fsig%2Font%2Ffma%2Ffma37385">37385</a></td></tr><tr><td colspan="2" class="infobox-below"><a href="/wiki/Anatomical_terms_of_muscle" title="Anatomical terms of muscle">Anatomical terms of muscle</a><div style="text-align: right;"><small class="noprint">[<a href="https://www.wikidata.org/wiki/Q1394547" class="extiw" title="d:Q1394547">edit on Wikidata</a>]</small></div></td></tr></tbody></table> <p>The <b>lumbricals</b> are intrinsic <a href="/wiki/Muscle" title="Muscle">muscles</a> of the <a href="/wiki/Hand" title="Hand">hand</a> that <a href="/wiki/Flexion" class="mw-redirect" title="Flexion">flex</a> the <a href="/wiki/Metacarpophalangeal_joint" title="Metacarpophalangeal joint">metacarpophalangeal joints</a>,<sup id="cite_ref-Gosling97_1-0" class="reference"><a href="#cite_note-Gosling97-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> and <a href="/wiki/Extension_(kinesiology)" class="mw-redirect" title="Extension (kinesiology)">extend</a> the <a href="/wiki/Interphalangeal_articulations_of_hand" class="mw-redirect" title="Interphalangeal articulations of hand">interphalangeal joints</a>.<sup id="cite_ref-Gosling97_1-1" class="reference"><a href="#cite_note-Gosling97-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:0_2-0" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/Lumbrical_muscle_of_the_foot" class="mw-redirect" title="Lumbrical muscle of the foot">lumbrical muscles of the foot</a> also have a similar action, though they are of less clinical concern. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Structure">Structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lumbricals_of_the_hand&action=edit&section=1" title="Edit section: Structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The lumbricals are four, small, worm-like muscles on each hand. These muscles are unusual in that they do not attach to bone. Instead, they attach proximally to the tendons of <a href="/wiki/Flexor_digitorum_profundus" class="mw-redirect" title="Flexor digitorum profundus">flexor digitorum profundus</a>,<sup id="cite_ref-Gosling97_1-2" class="reference"><a href="#cite_note-Gosling97-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:0_2-1" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:1_3-0" class="reference"><a href="#cite_note-:1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> and distally to the <a href="/wiki/Extensor_expansion" title="Extensor expansion">extensor expansions</a>.<sup id="cite_ref-Gosling97_1-3" class="reference"><a href="#cite_note-Gosling97-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:1_3-1" class="reference"><a href="#cite_note-:1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The first and second lumbricals are <a href="/wiki/Anatomical_terms_of_muscle" title="Anatomical terms of muscle">unipennate</a>, while the third and fourth lumbricals are <a href="/wiki/Anatomical_terms_of_muscle" title="Anatomical terms of muscle">bipennate</a>.<sup id="cite_ref-:0_2-2" class="reference"><a href="#cite_note-:0-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <tbody><tr> <td><b>#</b></td> <td><b>Form</b></td> <td><b>Origin</b></td> <td><b>Insertion</b> </td></tr> <tr> <td>First</td> <td><a href="/wiki/Unipennate" class="mw-redirect" title="Unipennate">unipennate</a></td> <td>It originates from the radial side of the most radial tendon of the flexor digitorum profundus (corresponding to the index finger).</td> <td>It passes posteriorly along the radial side of the index finger to insert on the <a href="/wiki/Extensor_expansion" title="Extensor expansion">extensor expansion</a> near the <a href="/wiki/Metacarpophalangeal_joint" title="Metacarpophalangeal joint">metacarpophalangeal joint</a>. </td></tr> <tr> <td>Second</td> <td>unipennate</td> <td>It originates from the radial side of the second most radial tendon of the flexor digitorum profundus (which corresponds to the middle finger).</td> <td>It passes posteriorly along the radial side of the middle finger and inserts on the extensor expansion near the metacarpophalangeal joint. </td></tr> <tr> <td>Third</td> <td><a href="/wiki/Bipennate" class="mw-redirect" title="Bipennate">bipennate</a></td> <td>One head originates on the radial side of the flexor digitorum profundus tendon corresponding to the ring finger, while the other originates on the ulnar side of the tendon for the middle finger.</td> <td>The muscle passes posteriorly along the radial side of the ring finger to insert on its extensor expansion. </td></tr> <tr> <td>Fourth</td> <td>bipennate</td> <td>One head originates on the radial side of the flexor digitorum profundus tendon corresponding to the little finger, while the other originates on the ulnar side of the tendon for the ring finger.</td> <td>The muscle passes posteriorly along the radial side of the little finger to insert on its extensor expansion. </td></tr></tbody></table> <div style="clear:both;" class=""></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:1121_Intrinsic_Muscles_of_the_Hand_Superficial_sin.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/1121_Intrinsic_Muscles_of_the_Hand_Superficial_sin.png/220px-1121_Intrinsic_Muscles_of_the_Hand_Superficial_sin.png" decoding="async" width="220" height="184" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e5/1121_Intrinsic_Muscles_of_the_Hand_Superficial_sin.png/330px-1121_Intrinsic_Muscles_of_the_Hand_Superficial_sin.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e5/1121_Intrinsic_Muscles_of_the_Hand_Superficial_sin.png/440px-1121_Intrinsic_Muscles_of_the_Hand_Superficial_sin.png 2x" data-file-width="1224" data-file-height="1023" /></a><figcaption>Lumbricals labeled at bottom left. Left hand, palmar view.</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Nerve_supply">Nerve supply</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lumbricals_of_the_hand&action=edit&section=2" title="Edit section: Nerve supply"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The first and second lumbricals (the most radial two) are <a href="/wiki/Nerve" title="Nerve">innervated</a> by the <a href="/wiki/Median_nerve" title="Median nerve">median nerve</a>. The third and fourth lumbricals (most ulnar two) are innervated by the deep branch of <a href="/wiki/Ulnar_nerve" title="Ulnar nerve">ulnar nerve</a>.<sup id="cite_ref-pmid8676031_5-0" class="reference"><a href="#cite_note-pmid8676031-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>This is the usual innervation of the lumbricals (occurring in 60% of individuals). However 1:3 (median:ulnar - 20% of individuals) and 3:1 (median:ulnar - 20% of individuals) also exist. The lumbrical innervation always follows the innervation pattern of the associated muscle unit of <a href="/wiki/Flexor_digitorum_profundus_muscle" title="Flexor digitorum profundus muscle">flexor digitorum profundus</a> (i.e. if the muscle units supplying the <a href="/wiki/Tendon" title="Tendon">tendon</a> to the <a href="/wiki/Middle_finger" title="Middle finger">middle finger</a> are innervated by the median nerve, the second lumbrical will also be innervated by the median nerve).<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Blood_supply">Blood supply</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lumbricals_of_the_hand&action=edit&section=3" title="Edit section: Blood supply"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Four separate sources supply blood to these muscles: the <a href="/wiki/Superficial_palmar_arch" title="Superficial palmar arch">superficial palmar arch</a>, the <a href="/wiki/Common_palmar_digital_artery" class="mw-redirect" title="Common palmar digital artery">common palmar digital artery</a>, the <a href="/wiki/Deep_palmar_arch" title="Deep palmar arch">deep palmar arch</a>, and the <a href="/wiki/Dorsal_digital_arteries_of_hand" title="Dorsal digital arteries of hand">dorsal digital artery</a>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Function">Function</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lumbricals_of_the_hand&action=edit&section=4" title="Edit section: Function"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The lumbrical muscles, with the help of the interosseous muscles, simultaneously flex the <a href="/wiki/Metacarpophalangeal_joint" title="Metacarpophalangeal joint">metacarpophalangeal joints</a> while extending both <a href="/wiki/Interphalangeal_articulations_of_hand" class="mw-redirect" title="Interphalangeal articulations of hand">interphalangeal joints</a> of the digit on which it inserts. The lumbricals are used during an upstroke in writing. </p> <div class="mw-heading mw-heading2"><h2 id="Etymology">Etymology</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lumbricals_of_the_hand&action=edit&section=5" title="Edit section: Etymology"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The term "lumbrical" comes from the <a href="/wiki/Latin" title="Latin">Latin</a>, meaning "<a href="/wiki/Worm" title="Worm">worm</a>".<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Additional_images">Additional images</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lumbricals_of_the_hand&action=edit&section=6" title="Edit section: Additional images"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-packed"> <li class="gallerybox" style="width: 92.666666666667px"> <div class="thumb" style="width: 90.666666666667px;"><span typeof="mw:File"><a href="/wiki/File:Gray416.png" class="mw-file-description" title="Tendons of forefinger and vincula tendina"><img alt="Tendons of forefinger and vincula tendina" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Gray416.png/136px-Gray416.png" decoding="async" width="91" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Gray416.png/205px-Gray416.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/31/Gray416.png/273px-Gray416.png 2x" data-file-width="500" data-file-height="466" /></a></span></div> <div class="gallerytext">Tendons of forefinger and vincula tendina</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide2yyy.JPG" class="mw-file-description" title="Lumbricals of the hand"><img alt="Lumbricals of the hand" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Slide2yyy.JPG/169px-Slide2yyy.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Slide2yyy.JPG/255px-Slide2yyy.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Slide2yyy.JPG/339px-Slide2yyy.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Lumbricals of the hand</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide5RRR.JPG" class="mw-file-description" title="Lumbricals of the hand"><img alt="Lumbricals of the hand" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/Slide5RRR.JPG/169px-Slide5RRR.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/30/Slide5RRR.JPG/255px-Slide5RRR.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/30/Slide5RRR.JPG/339px-Slide5RRR.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Lumbricals of the hand</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide14RRR.JPG" class="mw-file-description" title="Lumbricals muscle"><img alt="Lumbricals muscle" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Slide14RRR.JPG/169px-Slide14RRR.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Slide14RRR.JPG/255px-Slide14RRR.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Slide14RRR.JPG/339px-Slide14RRR.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Lumbricals muscle</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide6PPP.JPG" class="mw-file-description" title="Lumbricals muscle"><img alt="Lumbricals muscle" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Slide6PPP.JPG/169px-Slide6PPP.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Slide6PPP.JPG/255px-Slide6PPP.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/Slide6PPP.JPG/339px-Slide6PPP.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Lumbricals muscle</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide4VVV.JPG" class="mw-file-description" title="Lumbricals muscle"><img alt="Lumbricals muscle" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Slide4VVV.JPG/169px-Slide4VVV.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Slide4VVV.JPG/255px-Slide4VVV.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Slide4VVV.JPG/339px-Slide4VVV.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Lumbricals muscle</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide4AAAA.JPG" class="mw-file-description" title="Lumbricals muscle"><img alt="Lumbricals muscle" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Slide4AAAA.JPG/169px-Slide4AAAA.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Slide4AAAA.JPG/255px-Slide4AAAA.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Slide4AAAA.JPG/339px-Slide4AAAA.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Lumbricals muscle</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide9AAAA.JPG" class="mw-file-description" title="Lumbricals muscle"><img alt="Lumbricals muscle" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d5/Slide9AAAA.JPG/169px-Slide9AAAA.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d5/Slide9AAAA.JPG/255px-Slide9AAAA.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d5/Slide9AAAA.JPG/339px-Slide9AAAA.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Lumbricals muscle</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide1MAI.JPG" class="mw-file-description" title="Muscles of hand, cross section"><img alt="Muscles of hand, cross section" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Slide1MAI.JPG/169px-Slide1MAI.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Slide1MAI.JPG/255px-Slide1MAI.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Slide1MAI.JPG/339px-Slide1MAI.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Muscles of hand, cross section</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide1dsds.JPG" class="mw-file-description" title="Wrist joint. Deep dissection. Anterior, palmar view"><img alt="Wrist joint. Deep dissection. Anterior, palmar view" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Slide1dsds.JPG/169px-Slide1dsds.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/52/Slide1dsds.JPG/255px-Slide1dsds.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/52/Slide1dsds.JPG/339px-Slide1dsds.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Wrist joint. Deep dissection. Anterior, palmar view</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide2dsds.JPG" class="mw-file-description" title="Wrist joint. Deep dissection. Anterior, palmar view"><img alt="Wrist joint. Deep dissection. Anterior, palmar view" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Slide2dsds.JPG/169px-Slide2dsds.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/df/Slide2dsds.JPG/255px-Slide2dsds.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/df/Slide2dsds.JPG/339px-Slide2dsds.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Wrist joint. Deep dissection. Anterior, palmar view</div> </li> <li class="gallerybox" style="width: 114.66666666667px"> <div class="thumb" style="width: 112.66666666667px;"><span typeof="mw:File"><a href="/wiki/File:Slide3dsds.JPG" class="mw-file-description" title="Wrist joint. Deep dissection. Anterior, palmar view"><img alt="Wrist joint. Deep dissection. Anterior, palmar view" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/39/Slide3dsds.JPG/169px-Slide3dsds.JPG" decoding="async" width="113" height="85" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/39/Slide3dsds.JPG/255px-Slide3dsds.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/39/Slide3dsds.JPG/339px-Slide3dsds.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Wrist joint. Deep dissection. Anterior, palmar view</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Lumbricals_of_the_hand&action=edit&section=7" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-Gosling97-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-Gosling97_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Gosling97_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-Gosling97_1-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-Gosling97_1-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="Gosling" class="citation book cs1">Gosling JA, Harris PF, Humpherson JR, Whitmore I, Willan PL (2008). <i>Human Anatomy: Color Atlas and Textbook</i> (5th ed.). Philadelphia: Mosby. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7234-3451-1" title="Special:BookSources/978-0-7234-3451-1"><bdi>978-0-7234-3451-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Human+Anatomy%3A+Color+Atlas+and+Textbook&rft.place=Philadelphia&rft.edition=5th&rft.pub=Mosby&rft.date=2008&rft.isbn=978-0-7234-3451-1&rft.aulast=Gosling&rft.aufirst=JA&rft.au=Harris%2C+PF&rft.au=Humpherson%2C+JR&rft.au=Whitmore%2C+I&rft.au=Willan%2C+PL&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALumbricals+of+the+hand" class="Z3988"></span> p. 97</span> </li> <li id="cite_note-:0-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:0_2-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBilgePinarOzerGovsa2007" class="citation journal cs1">Bilge O, Pinar Y, Ozer MA, Govsa F (October 2007). "The vascular anatomy of the lumbrical muscles in the hand". <i>Journal of Plastic, Reconstructive & Aesthetic Surgery</i>. <b>60</b> (10): 1120–6. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.bjps.2006.06.023">10.1016/j.bjps.2006.06.023</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/17825776">17825776</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Plastic%2C+Reconstructive+%26+Aesthetic+Surgery&rft.atitle=The+vascular+anatomy+of+the+lumbrical+muscles+in+the+hand&rft.volume=60&rft.issue=10&rft.pages=1120-6&rft.date=2007-10&rft_id=info%3Adoi%2F10.1016%2Fj.bjps.2006.06.023&rft_id=info%3Apmid%2F17825776&rft.aulast=Bilge&rft.aufirst=O&rft.au=Pinar%2C+Y&rft.au=Ozer%2C+MA&rft.au=Govsa%2C+F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALumbricals+of+the+hand" class="Z3988"></span></span> </li> <li id="cite_note-:1-3"><span class="mw-cite-backlink">^ <a href="#cite_ref-:1_3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:1_3-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWangMcGlinnChung2014" class="citation journal cs1">Wang K, McGlinn EP, Chung KC (January 2014). <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4155599">"A biomechanical and evolutionary perspective on the function of the lumbrical muscle"</a>. <i>The Journal of Hand Surgery</i>. <b>39</b> (1): 149–55. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.jhsa.2013.06.029">10.1016/j.jhsa.2013.06.029</a>. <a href="/wiki/PMC_(identifier)" class="mw-redirect" title="PMC (identifier)">PMC</a> <span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4155599">4155599</a></span>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/24369943">24369943</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Journal+of+Hand+Surgery&rft.atitle=A+biomechanical+and+evolutionary+perspective+on+the+function+of+the+lumbrical+muscle&rft.volume=39&rft.issue=1&rft.pages=149-55&rft.date=2014-01&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4155599%23id-name%3DPMC&rft_id=info%3Apmid%2F24369943&rft_id=info%3Adoi%2F10.1016%2Fj.jhsa.2013.06.029&rft.aulast=Wang&rft.aufirst=K&rft.au=McGlinn%2C+EP&rft.au=Chung%2C+KC&rft_id=https%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC4155599&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALumbricals+of+the+hand" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSchweizer2003" class="citation journal cs1">Schweizer A (April 2003). 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Edinburgh: Churchill Livingstone. pp. 64, 82. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-443-05611-6" title="Special:BookSources/978-0-443-05611-6"><bdi>978-0-443-05611-6</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Last%27s+Anatomy%3A+Regional+and+Applied&rft.place=Edinburgh&rft.pages=64%2C+82&rft.edition=10th&rft.pub=Churchill+Livingstone&rft.date=1999&rft.isbn=978-0-443-05611-6&rft.aulast=Sinnatamby&rft.aufirst=Chummy+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALumbricals+of+the+hand" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFZbrodowskiMariéthozBednarkiewiczGajisin1998" class="citation journal cs1">Zbrodowski A, Mariéthoz E, Bednarkiewicz M, Gajisin S (June 1998). "The blood supply of the lumbrical muscles". <i>Journal of Hand Surgery</i>. <b>23</b> (3): 384–8. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FS0266-7681%2898%2980063-6">10.1016/S0266-7681(98)80063-6</a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/9665531">9665531</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:26384944">26384944</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Hand+Surgery&rft.atitle=The+blood+supply+of+the+lumbrical+muscles&rft.volume=23&rft.issue=3&rft.pages=384-8&rft.date=1998-06&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A26384944%23id-name%3DS2CID&rft_id=info%3Apmid%2F9665531&rft_id=info%3Adoi%2F10.1016%2FS0266-7681%2898%2980063-6&rft.aulast=Zbrodowski&rft.aufirst=A&rft.au=Mari%C3%A9thoz%2C+E&rft.au=Bednarkiewicz%2C+M&rft.au=Gajisin%2C+S&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALumbricals+of+the+hand" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBozerUzmanselDönmezParlak2018" class="citation journal cs1">Bozer, Cüneyt; Uzmansel, Deniz; Dönmez, Didem; Parlak, Muhammed; Beger, Orhan; Elvan, Özlem (2018-12-01). <a rel="nofollow" class="external text" href="http://www.sciencedirect.com/science/article/pii/S000327781730624X">"The effects of the communicating branch between medial and lateral plantar nerves on the innervations of the foot lumbrical muscles"</a>. <i>Journal of the Anatomical Society of India</i>. <b>67</b> (2): 130–132. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2Fj.jasi.2018.11.006">10.1016/j.jasi.2018.11.006</a>. <a href="/wiki/ISSN_(identifier)" class="mw-redirect" title="ISSN (identifier)">ISSN</a> <a rel="nofollow" class="external text" href="https://search.worldcat.org/issn/0003-2778">0003-2778</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:81678124">81678124</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+the+Anatomical+Society+of+India&rft.atitle=The+effects+of+the+communicating+branch+between+medial+and+lateral+plantar+nerves+on+the+innervations+of+the+foot+lumbrical+muscles&rft.volume=67&rft.issue=2&rft.pages=130-132&rft.date=2018-12-01&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A81678124%23id-name%3DS2CID&rft.issn=0003-2778&rft_id=info%3Adoi%2F10.1016%2Fj.jasi.2018.11.006&rft.aulast=Bozer&rft.aufirst=C%C3%BCneyt&rft.au=Uzmansel%2C+Deniz&rft.au=D%C3%B6nmez%2C+Didem&rft.au=Parlak%2C+Muhammed&rft.au=Beger%2C+Orhan&rft.au=Elvan%2C+%C3%96zlem&rft_id=http%3A%2F%2Fwww.sciencedirect.com%2Fscience%2Farticle%2Fpii%2FS000327781730624X&rfr_id=info%3Asid%2Fen.wikipedia.org%3ALumbricals+of+the+hand" class="Z3988"></span></span> </li> </ol></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist 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.navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Muscles_of_the_upper_limb" title="Template:Muscles of the upper limb"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Muscles_of_the_upper_limb" title="Template talk:Muscles of the upper limb"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Muscles_of_the_upper_limb" title="Special:EditPage/Template:Muscles of the upper limb"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Muscles_of_the_arm" style="font-size:114%;margin:0 4em"><a href="/wiki/Muscle" title="Muscle">Muscles</a> of the <a href="/wiki/Arm" title="Arm">arm</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Shoulder" title="Shoulder">Shoulder</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Deltoid_muscle" title="Deltoid muscle">deltoid</a></li> <li><a href="/wiki/Rotator_cuff" title="Rotator cuff">rotator cuff</a> <ul><li><a href="/wiki/Supraspinatus_muscle" title="Supraspinatus muscle">supraspinatus</a></li> <li><a href="/wiki/Infraspinatus_muscle" title="Infraspinatus muscle">infraspinatus</a></li> <li><a href="/wiki/Teres_minor_muscle" title="Teres minor muscle">teres minor</a></li> <li><a href="/wiki/Subscapularis_muscle" title="Subscapularis muscle">subscapularis</a></li></ul></li> <li><a href="/wiki/Teres_major_muscle" title="Teres major muscle">teres major</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Fascia" title="Fascia">fascia</a>:</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Deltoid_fascia" class="mw-redirect" title="Deltoid fascia">deltoid fascia</a></li> <li><a href="/wiki/Supraspinous_fascia" title="Supraspinous fascia">supraspinous fascia</a></li> <li><a href="/wiki/Infraspinous_fascia" title="Infraspinous fascia">infraspinous fascia</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Arm" title="Arm">Arm</a><br />(<a href="/wiki/Fascial_compartments_of_arm" title="Fascial compartments of arm">compartments</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Anterior_compartment_of_the_arm" class="mw-redirect" title="Anterior compartment of the arm">anterior</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Coracobrachialis_muscle" title="Coracobrachialis muscle">coracobrachialis</a></li> <li><a href="/wiki/Biceps" title="Biceps">biceps</a></li> <li><a href="/wiki/Brachialis_muscle" title="Brachialis muscle">brachialis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Posterior_compartment_of_the_arm" class="mw-redirect" title="Posterior compartment of the arm">posterior</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Triceps_brachii_muscle" class="mw-redirect" title="Triceps brachii muscle">triceps brachii</a></li> <li><a href="/wiki/Anconeus_muscle" title="Anconeus muscle">anconeus</a></li> <li><a href="/wiki/Articularis_cubiti_muscle" title="Articularis cubiti muscle">articularis cubiti</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Fascia" title="Fascia">fascia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Axillary_sheath" title="Axillary sheath">axillary sheath</a></li> <li><a href="/wiki/Axillary_fascia" title="Axillary fascia">axillary fascia</a></li> <li><a href="/wiki/Brachial_fascia" title="Brachial fascia">brachial fascia</a></li> <li><i>intermuscular septa</i> <ul><li><a href="/wiki/Lateral_intermuscular_septum_of_arm" class="mw-redirect" title="Lateral intermuscular septum of arm">lateral</a></li> <li><a href="/wiki/Medial_intermuscular_septum_of_arm" class="mw-redirect" title="Medial intermuscular septum of arm">medial</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i>spaces</i> <ul><li><a href="/wiki/Quadrangular_space" title="Quadrangular space">quadrangular space</a></li> <li><a href="/wiki/Triangular_space" title="Triangular space">triangular space</a></li> <li><a href="/wiki/Triangular_interval" title="Triangular interval">triangular interval</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Forearm" title="Forearm">Forearm</a><br />(<a href="/wiki/Fascial_compartments_of_forearm" class="mw-redirect" title="Fascial compartments of forearm">compartments</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Anterior_compartment_of_the_forearm" title="Anterior compartment of the forearm">anterior</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><span class="nobold"><i>superficial:</i></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pronator_teres_muscle" title="Pronator teres muscle">pronator teres</a></li> <li><a href="/wiki/Palmaris_longus_muscle" title="Palmaris longus muscle">palmaris longus</a></li> <li><a href="/wiki/Flexor_carpi_radialis_muscle" title="Flexor carpi radialis muscle">flexor carpi radialis</a></li> <li><a href="/wiki/Flexor_carpi_ulnaris_muscle" title="Flexor carpi ulnaris muscle">flexor carpi ulnaris</a></li> <li><a href="/wiki/Flexor_digitorum_superficialis_muscle" title="Flexor digitorum superficialis muscle">flexor digitorum superficialis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><span class="nobold"><i>deep:</i></span></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pronator_quadratus_muscle" title="Pronator quadratus muscle">pronator quadratus</a></li> <li><a href="/wiki/Flexor_digitorum_profundus_muscle" title="Flexor digitorum profundus muscle">flexor digitorum profundus</a></li> <li><a href="/wiki/Flexor_pollicis_longus_muscle" title="Flexor pollicis longus muscle">flexor pollicis longus</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Posterior_compartment_of_the_forearm" title="Posterior compartment of the forearm">posterior</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><span class="nobold"><i> superficial:</i></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Mobile_wad" title="Mobile wad">mobile wad</a> <ul><li><a href="/wiki/Brachioradialis" title="Brachioradialis">brachioradialis</a></li> <li><a href="/wiki/Extensor_carpi_radialis_longus_muscle" title="Extensor carpi radialis longus muscle">extensor carpi radialis longus</a> and <a href="/wiki/Extensor_carpi_radialis_brevis_muscle" title="Extensor carpi radialis brevis muscle">brevis</a></li></ul></li> <li><a href="/wiki/Extensor_digitorum_muscle" title="Extensor digitorum muscle">extensor digitorum</a></li> <li><a href="/wiki/Extensor_digiti_minimi_muscle" title="Extensor digiti minimi muscle">extensor digiti minimi</a></li> <li><a href="/wiki/Extensor_carpi_ulnaris_muscle" title="Extensor carpi ulnaris muscle">extensor carpi ulnaris</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><span class="nobold"><i>deep:</i></span></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Supinator_muscle" title="Supinator muscle">supinator</a></li> <li><a href="/wiki/Anatomical_snuffbox" title="Anatomical snuffbox">anatomical snuffbox</a> <ul><li><a href="/wiki/Abductor_pollicis_longus_muscle" title="Abductor pollicis longus muscle">abductor pollicis longus</a></li> <li><a href="/wiki/Extensor_pollicis_brevis_muscle" title="Extensor pollicis brevis muscle">extensor pollicis brevis</a></li> <li><a href="/wiki/Extensor_pollicis_longus_muscle" title="Extensor pollicis longus muscle">extensor pollicis longus</a></li></ul></li> <li><a href="/wiki/Extensor_indicis_muscle" title="Extensor indicis muscle">extensor indicis</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Fascia" title="Fascia">fascia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bicipital_aponeurosis" title="Bicipital aponeurosis">bicipital aponeurosis</a></li> <li><i>common tendons</i> <ul><li><a href="/wiki/Common_extensor_tendon" title="Common extensor tendon">extensor</a></li> <li><a href="/wiki/Common_flexor_tendon" title="Common flexor tendon">flexor</a></li></ul></li> <li><a href="/wiki/Antebrachial_fascia" title="Antebrachial fascia">antebrachial fascia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cubital_tunnel" title="Cubital tunnel">cubital tunnel</a></li> <li><a href="/wiki/Osborne%27s_ligament" title="Osborne's ligament">osborne's ligament</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hand" title="Hand">Hand</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">lateral volar</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Thenar_eminence" title="Thenar eminence">thenar</a> <ul><li><a href="/wiki/Opponens_pollicis_muscle" title="Opponens pollicis muscle">opponens pollicis</a></li> <li><a href="/wiki/Flexor_pollicis_brevis_muscle" title="Flexor pollicis brevis muscle">flexor pollicis brevis</a></li> <li><a href="/wiki/Abductor_pollicis_brevis_muscle" title="Abductor pollicis brevis muscle">abductor pollicis brevis</a></li></ul></li> <li><a href="/wiki/Adductor_pollicis_muscle" title="Adductor pollicis muscle">adductor pollicis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">medial volar</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Hypothenar_eminence" title="Hypothenar eminence">hypothenar</a> <ul><li><a href="/wiki/Opponens_digiti_minimi_muscle" class="mw-redirect" title="Opponens digiti minimi muscle">opponens digiti minimi</a></li> <li><a href="/wiki/Flexor_digiti_minimi_brevis_muscle_(hand)" class="mw-redirect" title="Flexor digiti minimi brevis muscle (hand)">flexor digiti minimi brevis</a></li> <li><a href="/wiki/Abductor_digiti_minimi_muscle_of_hand" class="mw-redirect" title="Abductor digiti minimi muscle of hand">abductor digiti minimi</a></li></ul></li> <li><a href="/wiki/Palmaris_brevis_muscle" title="Palmaris brevis muscle">palmaris brevis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">intermediate</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">lumbrical</a></li> <li><i>interossei</i> <ul><li><a href="/wiki/Dorsal_interossei_of_the_hand" title="Dorsal interossei of the hand">dorsal</a></li> <li><a href="/wiki/Palmar_interossei_muscles" title="Palmar interossei muscles">palmar</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Fascia" title="Fascia">fascia</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><span class="nobold"><i>posterior:</i></span></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Extensor_retinaculum_of_the_hand" title="Extensor retinaculum of the hand">extensor retinaculum</a></li> <li><a href="/wiki/Extensor_expansion" title="Extensor expansion">extensor expansion</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><span class="nobold"><i>anterior:</i></span></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Flexor_retinaculum_of_the_hand" title="Flexor retinaculum of the hand">flexor retinaculum</a></li> <li><a href="/wiki/Palmar_aponeurosis" title="Palmar aponeurosis">palmar aponeurosis</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox authority-control" aria-label="Navbox" style="padding:3px"><table class="nowraplinks hlist navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Help:Authority_control" title="Help:Authority control">Authority control databases</a> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1394547#identifiers" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" 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Anatomica</a></span></li></ul></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Lumbricals_of_the_hand&oldid=1224156259">https://en.wikipedia.org/w/index.php?title=Lumbricals_of_the_hand&oldid=1224156259</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Muscles_of_the_upper_limb" title="Category:Muscles of the upper limb">Muscles of the upper limb</a></li><li><a href="/wiki/Category:Hand" title="Category:Hand">Hand</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks 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