This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
In Anterior dislocation of the shoulder which nerve is commonly affected 
Select and explain. 
A. Ulnar nerve, B. Axillary nerve, C. Radial nerve, D. Median nerve
B: Axillary nerve
Answer: B: Axillary nerve 
Explanation: The shoulder is the most frequently dislocated joint. It moves almost without restriction but pays the price of stability.
The shoulders integrity is maintained by the glenohumeral joint capsule, the cartilaginous glenoid labrum (which extends the shallow glenoid fossa), and muscles of the rotator cuff.
Anterior dislocations occur in as many as 98% of cases.
Anterior displacement of the humeral head is the most common dislocation seen by emergency physicians. Shoulders Pathology and Nerve Involved
An inferior shoulder dislocation is the least common form of shoulder dislocation.
The condition is also called luxatio erecta because the arm appears to be permanently held upward or behind the head, in fixed abduction.
It is caused by a hyper-abduction of the arm that forces the humeral head against the acromion