Compression Neuropathy

Question 1

UE Compression Peripheral Nerves that are at Risk?

Answer 1

Radial N

Median N

Ulnar N

Musculocutaneous N

Axillary N

Question 2

The Radial N is the motor nerve to what muscles?

Sensation to what?

Answer 2

Motor: Triceps Brachii, Anconeus and Wrist Extensors

Sensation: Majority of Dorsum of the hand

(via the Posterior Interosseous N)

Question 3

Radial N three sites for entrapment

High on the Humerus:

From?

Signs?

Answer 3

From a humerus fracture or compression of nerve near spiral groove

Wrist Drop, Weakness of elbow flexion (Brachioradialis M), Tricep Involvement, +/- triceps reflex diminished, pain/numbness

Question 4

Radial N three sites for entrapment

Radial Tunnel:

From?

Signs?

Answer 4

Repetitive Rotatory Movements (Rowing, Discus, Racquet Sports), Heavy Manual Labor

Pain and tenderness 5 cm distal to lateral epicondyle

(Wrist Drop or pain with resisted SUPINATION)

Question 5

Radial N three sites for entrapment

At the Wrist:

From?

Signs?

Answer 5

Superficial branch (sensory) pinched between brachioradialis and ECRL during forarm pronation, sensation changes over posterolateral hand