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: Anatomy
[{'content': 'In crutch paralysis most frequently affected nerve is? \nSelect and explain. \nA. Median nerve, B. Radial nerve, C. Axillary nerve, D. Musculocutaneous nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Crutch paralysis: It follows prolonged use of crutches in the axilla. Most frequently, it involves the radial nerve.Effects of radial nerve injury in the axilla:Motor loss: Loss of extension at elbow due to paralysis of triceps brachiiLoss of extension at wrist (wrist drop)Sensory loss:Loss of sensation over;Posterior surface of lower pa of armDorsum of base of thumb and Small area over back of forearm.', 'role': 'assistant'}]