Abductor digiti minimi of the hand

Origin Pisiform and FCU tendon
Insertion Two slips:
1 - Ulnar side of fifth digit proximal phalanx
2 - Ulnar border of EDQ aponeurosis
Action(s) Abducts 5th digit and helps flex little finger proximal phalanx at MP joint
Nerve Supply Deep branch of ulnar nerve, C8
Arterial Supply Ulnar artery
Physical Exam  
Clinical Importance This muscle may contract in rheumatoid arthritis and keep the finger abducted
Disease States Rheumatoid arthritis
Discussion The Abductor minimi digiti (Abductor digiti quinti) is situated on the ulnar border of the palm of the hand.

It arises from the pisiform bone and from the tendon of the Flexor carpi ulnaris, and ends in a flat tendon, which divides into two slips; one is inserted into the ulnar side of the base of the first phalanx of the little finger; the other into the ulnar border of the aponeurosis of the Extensor digiti quinti proprius.

In case of polydactyly it may insert to the sixth finger instead, if there is one.

Figures

Click thumbnail for larger image

Credits:

From Wikipedia: Abductor minimi digiti muscle (hand)

Springerlink Resources
Refresh Fri Jul 30 10:04:18 PDT 2010

Orthopaedic Web Links

Internet resources validated by OrthopaedicWebLinks.com

Refresh Fri Jul 30 10:04:19 PDT 2010

Your Rating: Results: PatheticBadOKGoodOutstanding! 0 rates
Enter labels to add to this page:
Please wait 
Looking for a label? Just start typing.

Cite this page

. Orthopaedia Main - Abductor digiti minimi of the hand. In: Orthopaedia - Collaborative Orthopaedic Knowledgebase. Created Jan 05, 2008 19:38 by Christian Veillette , Last modified Apr 04, 2010 14:25 ver.14. Retrieved 2010-07-30, from http://www.orthopaedia.com/x/AYE9.

Contributions

The following individuals have contributed to this page:

UserEditsCommentsLabelsLabel ListLast Update
Christian Veillette 1200116 days ago
Neil Macintyre 100514 days ago
Orthopaedia Assistant 100371 days ago