Updated: 12/28/2021

Flexor Pollicis Brevis

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  • Summary
      • Flexor Pollicis Brevis
      • Origin
      • Superficial head: Flexor retinaculum and tubercles of scaphoid and trapezium
      • Deep head: Trapezoid and Capitate (more medial than superficial head)
      • Insertion
      • Lateral side of base of proximal phalanx of thumb
      • Action
      • Flexes thumb
      • Innervation
      • Superficial head: recurrent branch of the median nerve (C8, T1)
      • Deep head: deep branch of ulnar nerve.
      • Arterial Supply
      • Superficial palmar branch of the radial artery

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