Origin

scaphoid, trapezium, and radial side of flexor retinaculumm

Insertion

anterolateral aspect of proximal phalanx of thumb

Action(s)

thumb abduction (anteriorly away from palm at cmc joint)

Nerve Supply

recurrent motor branch of median nerve

Arterial Supply

superficial palmar arch

Physical Exam

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Clinical Importance

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Disease States

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Discussion

Discussion on muscle

Figures

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Credits:

From Wikipedia:
Abductor pollicis brevis

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