Upper limb nerve Injury

Question 1

Radial Nerve injury

When at risk?

Answer 1

Mid shaft humeral fracture

Question 2

When is radial at risk?

Answer 2

Mid shaft humeral fracture

Question 3

Mid shaft humeral fracture?

Answer 3

Radial nerve at risk

Question 4

Can you still extend elbow?

Answer 4

Yes

Nerve to triceps given off prior to radial nerve entering spiral groove.

Question 5

How does it present?

Answer 5

WRIST DROP

Brachioradialis is down
As are all the extensor muscles

Question 6

Median Nerve damage - when?

Answer 6

Supracondylar (just above elbow) fracture of humerus

Question 7

High median nerve lesion?

Answer 7

Hand of benediction

Question 8

Low median nerve injury?

Answer 8

Broken glass of carpal tunnel compression

Question 9

Low median nerve lesion?

Answer 9

LOAF paralysed

Lumbricals
Opponents Pollicis
Abductor pollicis brevis
Flexor pollicis brevis.

Question 10

Ulnar nerve injury at wrist?

Answer 10

Ulnar claw.

Fingers hyperextended at MCP joint and flexed at IP joints.

Question 11

High Ulnar nerve lesion.

Answer 11

Ulnar claw

BUT no flexion at DIPJ of ring and little fingers. Only hyperextension at MCPJ and flexion at PIPJ.

ULNAR PARADOX AS LESS EVIDENT CLAW.

Question 12

High ulnar nerve lesion?

Answer 12

Medial epicondylar fracture