May 31, 2019
Hypothenar compartment:
Opponens digiti minimi
Originates on the hook of the hamate and the flexor retinaculum
Inserts on the medial side of the fifth metacarpal
Opposes digit 5.
Flexor digiti minimi brevis
Originates on the hook of the hamate and the flexor retinaculum
Inserts on the medial side of the base of the proximal phalanx of digit 5
Flexes digit 5.
Abductor digiti minimi
Originates on the pisiform (and, in some cases, from the tendon of flexor carpi ulnaris)
Inserts near flexor opponens digiti minimi on the base of the proximal phalanx of digit 5
Abducts digit 5.
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