Peripheral Nerve Injuries/Palsies

Question 1

Where is the median nerve usually entrapped/compressed and what is the effect of this?

Answer 1

Carpal tunnel (wrist)
Burning pain, numbness, tingling in first 3.5 digits

Question 2

Where is the ulnar nerve usually entrapped/compressed and what is the effect of this?

Answer 2

Cubital tunnel (elbow)
Burning pain, numbness, tingling in medial half of fourth digit and whole fifth digit

Question 3

Where is the radial nerve usually entrapped/compressed and what is the effect of this?

Answer 3

Spiral groove of humerus
Wrist drop

Question 4

Where is the posterior interosseous nerve usually entrapped/compressed and what is the effect of this?

Answer 4

Supinator muscle (forearm)
Weakness of finger and thumb extension at MCP joint and weakness of thumb abduction

Question 5

Where is the lateral cutaneous nerve of the thigh usually entrapped/compressed and what is the effect of this?

Answer 5

Inguinal ligament
Tingling, numbness and burning pain in outer thigh

Question 6

Where is the common peroneal nerve usually entrapped/compressed and what is the effect of this?

Answer 6

Neck of fibula
Foot drop (affecting dorsiflexion and eversion)

Question 7

Where is the posterior tibial nerve usually entrapped/compressed and what is the effect of this?

Answer 7

Tarsal tunnel (flexor retinaculum in foot)
Numbness, tingling, weakness in bottom of foot