Nerve Injuries
A 45-year-old man presents 3 weeks after an anterior shoulder dislocation that was reduced in the emergency department. He notices weakness in lifting his arm and numbness over the lateral shoulder. Examination reveals weakness of shoulder abduction beyond 15 degrees and absent sensation over the "regimental badge" area. The deltoid muscle appears flattened. Regarding axillary nerve injury:
Mark each as TRUE or FALSE
The axillary nerve arises from the posterior cord of the brachial plexus (C5,6); it passes through t...
Axillary nerve injury is common after anterior shoulder dislocation (10-20% incidence), proximal hum...
The axillary nerve arises from the lateral cord; it passes through the triangular space; it supplies...
Clinical assessment involves testing deltoid (shoulder abduction, forward flexion), teres minor (ext...
Surgical exploration is indicated for: sharp/penetrating injuries, no recovery by 3-4 months, associ...
Answer the questions to see explanations
Click T (True) or F (False) for each option