Structures

  • Opponens pollicis
  • Abductor pollicis brevis
  • Flexor pollicis brevis

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
Abductor pollicis brevis- Abducts thumb - Flexor retinaculum
- Tubercles of scaphoid and trapezium
- Lateral base of proximal phalanx of thumb- Reccurent branch of median nerve: C8,T1- Superficial palmar branch of radial artery
Flexor pollicis brevis- Flexes thumb- Flexor retinaculum
- Tubercles of scaphoid and trapezium
- Lateral base of proximal phalanx of thumb- Reccurent branch of median nerve: C8,T1- Superficial palmar branch of the radial artery