Structures

  • Opponens pollicis
  • Opponens digiti minimi
MuscleActionOriginInsertionInnervationBlood supply
Opponens pollicis- Medially rotates thumb- Tubercle of trapezium and Flexor retinaculum- Lateral margin of 1st metacarpal- Recurrent branch of median nerve: C8,T1- Superficial Palmar branch of radial artery
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