Structures

  • Opponens digiti minimi
  • Abductor digiti minimi
  • Flexor digiti minimi brevis
MuscleActionOriginInsertionInnervationBlood supply
Opponens digiti minimi- Laterally rotates and anteriorly draws 5th metacarpal to opposition with thumb- Hook of hamate
- Flexor retinaculum
- Medial border 5th metacarpal- Deep branch of ulnar nerve: C8,T1- Ulnar artery
Abductor digiti minimi- Abducts little finger- Pisiform- Medial base of proximal phalanx of little finger- Deep branch of ulnar nerve: C8,T1- Ulnar artery
Flexor digiti minimi brevis- Flexes proximal phalanx of little finger- Hook of hamate
- Flexor retinaculum
- Medial base of proximal phalanx of little finger- Deep branch of ulnar nerve- Ulnar artery