Upper limb anatomy Flashcards
Musculocutaneous nerve - nerve roots
C5-7
Musculocutaneous nerve - motor
Elbow flexion and supination
Musculocutaneous nerve - sensory
Lateral part of forearm
Axillary nerve - nerve roots
C5-6
Axillary nerve - motor
Shoulder abduction
Axillary nerve - sensory
Regimental badge area
Axillary nerve - mechanism of injury and features
Humeral neck fracture/dislocation
Causes flattened deltoid
Radial nerve - nerve roots
C5-8
Radial nerve - motor
Extension of forearm, wrist, fingers and thumb
Radial nerve - sensory
Small area dorm of hand between 1st and 2nd metacarpal
Radial nerve - mechanism of injury and features
Humeral mid shaft fracture
Wrist drop
Median nerve - nerve roots
C6, C8-T1
Median nerve - motor
LOAF muscles
- lateral 2 lumbricals
- Opponens collis
- Abductor polices brevis
- Flexor polls brevis
Median nerve - sensory
Palmar aspect lateral 3.5 fingers
Ulner nerve - nerve roots
C8-T1
Ulnar nerve - motor
Intrinsic hand muscles EXCEPT LOAF
Wrist flexion
Ulnar nerve - sensory
Medial 1.5 fingers
Ulnar nerve - mechanism of injury and features
Medial epicondyle fracture
Claw hand
Long thoracic nerve - nerve roots
Serratus anterior
Long thoracic nerve - sensory
None
Long thoracic nerve - mechanism and features
During sport eg blow to ribs
Mastectomy
Winged scapula
Erb-Duchenne palsy - features
Waiter’s tip - internally rotated, elbow extended
Erb-Duchenne palsy - nerve roots
C5-6
Erb-Duchenne palsy - mechanism
Shoulder dystocia
Klumpke injury - nerve roots
C8-T1
Klumpke injury - mechanism
Sudden upward jerk of hand, shoulder dystocia
