Upper Leg Nerves ☺️

Question 1

Musculocutaneous

• motor
• sensory
• injured in

Answer 1

Elbow flex
Supination

Lat forearm

Injured as part of brachial plexus injury

Question 2

Axillary

• motor
• sensory
• injured in

Answer 2

Shoulder abd

Deltoid

Proximal humeral neck fracture => nerve wraps around here

Question 3

Radial

• motor
• sensory
• injured in

Answer 3

Forearm, hand ext

Dorsal 1, 2 MC

Starts anteriorly, wraps around humeral shaft laterally and enters cubital fossa anteriorly => humeral shaft injury

Palsy => wrist drop

Question 4

Medial

• motor
• sensory
• injured in

Answer 4

LOAF
-lateral 2 lumbricals
-opponens pollicis
-abd pollicis brevis
-flexor pollicis brevis
Thenars
Wrist flex
Pronation

Palmar of lateral 3 1/2 fingers

Carpal tunnel

Question 5

Ulnar

• motor
• sensory
• injured in

Answer 5

Intrinsic hand minus LOAF
Wrist flex

Medial 1 1/2 fingers

Medial epicondyle fracture => claw hand

Question 6

Erb-Duchenne palsy

• common cause
• presentation

Answer 6

Damage to upper trunk of BP (C5-6)

Complication of shoulder dystocia

Arm by side
Med rot
Elbow ext
Wrist, finger flex

Question 7

Klumpke injury

• common cause
• presentation

Answer 7

Damage to lower trunk of BP (C8-T1)

Shoulder dystocia
Sudden upward jerk of hand

Horners syndromes
Claw hand
Supine
Wrist, finger ext