ADDUCTOR POLLICIS
| ORIGIN Oblique head: base of 2nd and 3rd metacarpals, trapezoid and capitate. Transverse head: palmar border and shaft of 3rd metacarpal |
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| INSERTION Ulnar sesamoid then ulnar side of base of proximal phalanx and tendon of extensor pollicis longus |
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| ACTION Adducts carpometacarpal joint of thumb |
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| NERVE Deep branch of ulnar nerve (T1) |