Axillary nerve
origin + course
C5+6
posterior cord of brachial plexus
posterior to axillary artery
exits axilla region via quadrangular space
passes medially to surgical neck of humerus along with posterior circumflex humeral artery
surgical neck of humerus # = axillary nerve and humeral circumflex arteries at risk
terminal branches:
- lateral cutaneous branch
- posterior terminal branch
- anterior terminal branch
- articular branch
supply
Motor
- teres minor + deltoid
Sensory
- regimental badge area