ENTRAPMENT MONONEUROPATHIES

Question 1

Most common entrapment neuropathy of the lower extremity

Leads to burning or tingling sensation on the lateral shin and dorsum of foot

May also lead to weakness of foot dorsiflexion (tibialis anterior) and eversion (peroneaus longus)

Answer 1

Peroneal neuropathy at the fibular head

Question 2

Leads to burning dysesthesias on toes and sole of foot

If calcaneal sensory branches involved, heel is involved

Answer 2

Tarsal tunnel syndrome

Question 3

Symptoms depend on fibers involved (preferentially peroneal or tibial

Usually occurs at the sciatic notch

Answer 3

Sciatic mononeuropathy

Question 4

Leads to pain or tingling paresthesias in the thumb and first three fingers

Weakness in abductor pollicis brevis (carpal tunnel), finger
flexors

Answer 4

Median mononeuropathy at wrist (carpal tunnel) or at elbow

Question 5

Pain and tingling in the ring and pinky fingers; if dorsal ulnar fibers involved, dorsum of hand is involved as well

Weakness in intrinsic muscles of hand, some finger flexors

Answer 5

Ulnar mononeuropathy at elbow or in forearm

Question 6

Pain and tingling paresthesias on the dorsum of the hand

Weakness in the wrist and finger extensors

Answer 6

Radial mononeuropathy