Opponens Digiti Minimi
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Top Contributors - Agoro Bukola Zainab, Kim Jackson, Shaimaa Eldib and Rucha Gadgil
Description[edit | edit source]
Opponens digit minimi (ODM) is an intrinsic muscle of the hand. It's a triangular muscle that extends between the hamate bone (carpal bone) and the 5th metacarpal bone. It forms the hypothenar muscle group together with the abductor digiti minimi and flexor digit minimi brevis. These muscles act together in moving the little finger.
Origin[edit | edit source]
Insertion[edit | edit source]
Nerve[edit | edit source]
Artery[edit | edit source]
Function[edit | edit source]
Clinical relevance[edit | edit source]
The oponones digiti minimi which forms part of the intrinsic muscles provides fine motor movement of the hand. This is usually seen when trying to grip round or irregular objects such as a ball. As the ulner nerve (C8, T1) supplies this muscle, compromise to the nerve leads to atrophy of the ODM with a resulting weakness in the muscle. There's also numbness, tingling, and pain in the 5th finger that comes with ulnar nerve entrapment.
