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52
Extensor pollicis
longus attachment, nerve action
longus attachment, nerve action
Posterior surfaces of middle 1/3 of ulna & interosseous membrane
to Base of distal phalanx of thumb
Extends distal phalanx of thumb at metacarpophalange al and
interphalangeal
joints
Posterior
interosseous
n. (C7 & C8),
a branch of
the radial n.
to Base of distal phalanx of thumb
Extends distal phalanx of thumb at metacarpophalange al and
interphalangeal
joints
Posterior
interosseous
n. (C7 & C8),
a branch of
the radial n.
