Updated: 12/28/2021

Abductor Pollicis Brevis

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  • Summary
    • Abductor Pollicis Brevis
      Origin
      Flexor retinaculum and tubercles of scaphoid and trapezium
      Insertion
      Lateral side of base of proximal phalanx of thumb
      Action
      Abducts thumb and helps oppose it
      Innervation
      Recurrent branch of median nerve (C8 and T1)
      Arterial Supply
      Superficial palmar branch of the radial artery

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