Abductor pollicis brevis muscle
Updates to Article Attributes
Body
was changed:
The abductor pollicis brevis is a thin subcutaneous muscle located laterally in the thenar eminence of the hand.
Summary
-
origin: mainly from the flexor retinaculum
- few fibres originate from the tubercles of scaphoid and trapezium and tendon of abductor pollicis longus
- accessory slips may originate from the long and short pollicial extensors (extensor pollicis longus and extensor pollicis brevis), the opponens pollicis or radial styloid process
- insertion: its medial fibres are attached by a thin, flat tendon to the radial side of the proximal phalangeal base in the pollex and lateral fibres join the pollicial dorsal digital expansion
- innervation: lateral branch of median nerve (C8 and T1)
- action: abducts the thumb and medially rotates it at the carpometacarpal and metacarpophalangeal joints
-<p>The <strong>abductor pollicis brevis </strong>is a thin subcutaneous muscle located laterally in the thenar eminence of the hand.</p><h4>Summary</h4><ul>- +<p>The <strong>abductor pollicis brevis </strong>is a thin subcutaneous muscle located laterally in the <a href="/articles/thenar-eminence">thenar eminence</a> of the hand.</p><h4>Summary</h4><ul>
-<strong>innervation</strong>: lateral branch of <a href="/articles/median-nerve">median nerve</a> (C8 and T1)</li>- +<strong>innervation</strong>: lateral branch of <a href="/articles/median-nerve-2">median nerve</a> (C8 and T1)</li>
References changed:
- 1. DSc SSP. Gray's Anatomy. Churchill Livingstone. (2011) ISBN:0443066841. <a href="http://books.google.com/books?vid=ISBN0443066841">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/0443066841">Find it at Amazon</a><span class="ref_v3"></span>
- 2. Moore KL, Agur AMR, Dalley AF. Clinically oriented anatomy. LWW. ISBN:1451119453. <a href="http://books.google.com/books?vid=ISBN1451119453">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/1451119453">Find it at Amazon</a><span class="auto"></span>
- 3. Last's anatomy, regional and applied. Churchill Livingstone. ISBN:044304662X. <a href="http://books.google.com/books?vid=ISBN044304662X">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/044304662X">Find it at Amazon</a><span class="auto"></span>
- 1- DSc SSP. Gray's Anatomy. Churchill Livingstone. (2011) ISBN:0443066841. <a href="http://books.google.com/books?vid=ISBN0443066841">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/0443066841">Find it at Amazon</a><span class="ref_v3"></span>
Unable to process the form. Check for errors and try again.