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Interosseous muscles

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• Added by Christian Veillette, last edited by Orthopaedia Assistant on Jul 10, 2009  (view change)

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Origin Metacarpals Insertion Proximal phalange Action(s) Adduction Nerve Supply Deep branch of ulnar nerve Arterial Supply   Physical Exam   Clinical Importance   Disease States   Discussion Innervation: All of the interosseous muscles of the hand are innervated by the deep branch of the ulnar nerve. Actions: The palmar interosseous muscles adduct the fingers towards the middle finger. This is in contrast to the dorsal interossei, which abduct the fingers away from the middle finger. In addition (like dorsal interossei) they flex the finger at the metacarpo-phalangeal joint and extend the finger at the interphalangeal joint and thus assist the lumbricals. Pollical Palmar Interosseous Muscle (of Henle, PPIM) It is currently accepted that more than 80% of individuals present a pollical palmar interosseous muscle (of the thumb) as suggested by Henle's description in 1858 and verified by numerous investigations such as those carried out by Randall S. Susman, Lukhanyo Nyati, and Mandeep S. Jassal. Figures Click thumbnail for larger image Credits: From Wikipedia: Interosseous muscles

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. Orthopaedia Main - Interosseous muscles. In: Orthopaedia - Collaborative Orthopaedic Knowledgebase. Created Jan 05, 2008 20:05 by Christian Veillette , Last modified Jul 10, 2009 13:14 ver.3. Retrieved 2010-07-30, from http://www.orthopaedia.com/x/PIE9.

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The following individuals have contributed to this page:

User	Edits	Comments	Labels	Label List	Last Update
Christian Veillette	2	0	0		936 days ago
Orthopaedia Assistant	1	0	0		384 days ago

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