| Opponens digiti minimi muscle | |
|---|---|
 Deep muscles of the right hand, palmar view. | |
| Details | |
| Origin | Hook of hamate and flexor retinaculum |
| Insertion | Medial border of 5th metacarpal (in hand, 3rd digit is orientation of mid-line) |
| Artery | Ulnar artery |
| Nerve | Deep branch of ulnar nerve (C8 and T1) |
| Actions | Draws 5th metacarpal anteriorly and rotates it, bringing little finger (5th digit) into opposition with thumb |
| Identifiers | |
| Latin | musculus opponens digiti minimi (Old: opponens quinti digiti) |
| TA98 | A04.6.02.064 |
| TA2 | 2531 |
| FMA | 37384 |
| Anatomical terms of muscle | |
The opponens digiti minimi (opponens digiti quinti in older texts) is a muscle in the hand. It is of a triangular form, and placed immediately beneath the palmaris brevis, abductor digiti minimi and flexor digiti minimi brevis. It is one of the three hypothenar muscles that control the little finger.[1]
It arises from the convexity of the hamulus of the hamate bone and the contiguous portion of the transverse carpal ligament; it is inserted into the whole length of the metacarpal bone of the little finger, along its ulnar margin.
The opponens digiti minimi muscle serves to flex and laterally rotate the 5th metacarpal about the 5th carpometacarpal joint, as when bringing the little finger and thumb into opposition. It is innervated by the deep branch of the ulnar nerve.
YouTube Encyclopedic
-
1/3Views:7 9767 077595
-
Muscles of the Hand - Hand Anatomy (Medial Volar Muscles) 2/3
-
Anatomy Of The Opponens Pollicis - Everything You Need To Know - Dr. Nabil Ebraheim
-
Abductor Digiti Minimi - Strain Counterstrain® - Jones Institute Europe
Transcription
See also
Additional images
-
The muscles of the thumb. (Opponens quinti digiti visible at center right.) -
Front of the left forearm. Deep muscles. (Opponens digiti quinti visible at bottom left.) -
Bones of the left hand. Volar surface. -
Transverse section across the wrist and digits. -
Opponens digiti minimi -
Opponens digiti minimi -
Opponens digiti minimi muscle -
Muscles of hand. Cross section.
References
This article incorporates text in the public domain from page 464 of the 20th edition of Gray's Anatomy (1918)
- ^ Uysal, Ahmet Çaǧri; Alagöz, Murat Şahin; Tüccar, Eray; Şensöz, Ömer; Tekdemir, Ibrahim (2005-01-01). "The vascular anatomy of the abductor digiti minimi and the flexor digiti minimi brevis muscles". The Journal of Hand Surgery. 30 (1): 172–176. doi:10.1016/j.jhsa.2004.06.001. ISSN 0363-5023. PMID 15680577.
External links
 | This muscle article is a stub. You can help Wikipedia by expanding it. |
This page was last edited on 4 May 2024, at 18:21