origin: hamulus of the hamate bone and flexor retinaculum;
insertion: entire length of ulnar border of 5th metacarpal;
action: flexes and slightly rotates the 5th metacarpal; helps to cup the palm of the hand;
synergists:
flexor digiti minimi brevis,
abductor digiti minimi;
nerve supply: deep palmer branch of ulnar nerve,
C7,
C8,
T1
- Discussion:
-
opponens digiti minimi is deep to
flexor brevis
& inserts into the shaft of the 5th metacarpal;
- this muscle aids in stabilization of the ulnar grip and participates in the action of cupping of the palm;
