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Abductor Pollicis Brevis


Origin :

  • Flexor retinaculum and tubercles of scaphoid and trapezium.

Insertion :

  • Lateral side of base of proximal phalanx of thumb.

Innervation :

  • Recurrent branch of median nerve (C8 and T1).

Arterial Supply :

  • Superficial palmar branch of the radial artery.

Depth :

  • Superficial


Action :

  • Abducts thumb and helps oppose it.