This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Orthopaedics
[{'content': 'Ulnar nerve paralysis causes \nSelect and explain. \nA. Ape thumb deformity, B. Wrist drop, C. Claw finger deformity, D. Meralgia perasthetica', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) Claw finger deformityRef.: Maheshwari 5th ed. / 64* In ulnar nerve palsy especially in long standing cases, the hand assumes the characteristic "claw" deformity. It is also known as partial claw hand deformity.* Complete claw hand deformity is due to palsy of ulnar and median nerve both.ConditionFeaturesMedian Nerve PalsyLabourer Nerve Palsy* Pointing index* Pen test* Ape thumb deformity* Carpal tunnel syndromeUlnar Nerve PalsyMusician nerve palsy* Book test (froment sign)* Card test* Egawa\'stest* Claw finger deformityRadial Nerve PalsyLateral cutaneous nerve of thigh (entrapped)* Wristdrop* Thumb drop* Finger drop* Meralgia paraestheticaErb\'s palsyPoliceman tip deformity (Porter\'s tip deformity)', 'role': 'assistant'}]