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51
Abductor pollicis
longus attachment, nerve action
longus attachment, nerve action
Posterior surfaces of ulna, radius & interosseous
membrane to
Base of 1st metacarpal bone
Posterior interosseous n. (C7 & C8), a branch of the radial n.
Abducts thumb &
extends it at
carpometacarpal
joint
membrane to
Base of 1st metacarpal bone
Posterior interosseous n. (C7 & C8), a branch of the radial n.
Abducts thumb &
extends it at
carpometacarpal
joint
