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: Surgery
[{'content': 'Most common nerve injured in anterior shoulder dislocation: March 2011, March 2013 (c, e) \nSelect and explain. \nA. Median nerve, B. Circumflex branch of axillary nerve, C. Musculocutaneous nerve, D. Ulnar nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Circumflex branch of axillary nerve Nerve commonly injured in anterior dislocation is Axillary nerve, manifesting as deltoid parlysis, with a small area of anaesthesia over the lateral aspect of the shoulder Terms and related nerves: Injury to upper end of humerus: Axillary nerve palsy Anterior dislocation of shoulder: Axillary nerve palsy Crutch palsy: Radial nerve involvement Pointing index: Median nerve palsy Ape thumb deformity: Median nerve palsy Carpal tunnel syndrome: Median nerve involvement Card test: Ulnar nerve palsy Meralgia paresthetica: Lateral cutaneous nerve of thigh compression Winging of scapula: Long thoracic nerve of Bell palsy Supracondylar humerus fracture: Median nerve (anterior interosseous nerve)', 'role': 'assistant'}]