ADDUCTOR POLLICIS
Origin
Oblique head: base of 2nd and 3rd MCs, trapezoid and capitate. Transverse head: palmar border and shaft of 3rd MC
Action
Adducts CMC jnt of thumb
Insertion
Ulnar sesamoid then ulnar side of base of prox phalanx and tendon of extensor pollicis longus
Nerve
Deep br of ulnar N (T1)