Nerves and innervations

radial

motor: posterior compartment of forearm and arm

sensory: skin of dorsolateral arm, forearm, and hand

axillary

motor: deltoid and teres minor

sensory: skin of lateral shoulder

musculocutaneous

motor: anterior compartment of arm

sensory: skin lateral forearm

median

motor: anterior forearm and palmar thenar muscles

sensory: lateral palm, digits 1- 3, and lateral half of digit 4

ulnar

motor: wrist and hand felxors, intercossei, and hypothenar muscles

sensory: medial hand, medial side of digit 4 and all of digit 5, funny bone

femoral

motor: anterior compartment of thigh

sensory: skin of anterormedial thigh, skin of medial leg and foot

obturator

motor: medial compartment of thigh

sensory: skin of medial thigh

tibial

motor: posterior compartment of thigh and leg, intrinsic foot muscles, hamstrings

sensory: skin of posterior lateral leg and sole of foot

common fibular

motor: anterior and lateral leg, dorsum of foot

sensory: skin of anterior and lateral leg, dorsum of foot

axillary lesion

difficulty abducting arm 90

musculocutaneous lesion

weakness flexing elbow

median lesion

weakness flexing wrist, difficulty opposing thumb, carpal tunnel

radial lesion

difficulty extending elbow, wrist drop

ulnar lesion

can’t adduct/abduct fingers, “funny bone”

femoral lesion

walking problems, knee buckles

tibial lesion

shuffling gait, difficulty plantar flexing

common fibular lesion

foot drop

superior gluteal lesion

Trendelenburg gait

inferior gluteal lesion

difficulty standing from seated, going up stairs, weak hip extensors