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
Ulnar paradox is seen in 
Select and explain. 
A. High ulnar lesion, B. Low ulnar lesion, C. Triple nerve injuries, D. Combined ulnar and median nerve injuries
A: High ulnar lesion
Answer: A: High ulnar lesion 
Explanation: Ulnar claw hand is seen in lower ulnar nerve palsy not Iin high ulnar nerve palsy It is called as ulnar paradox Ulnar paradox # Not severe claw hand deformity, but inability to flex DIP and weakness of flexing MCP & PIP of digits IV and V # Seen with higher nerve injuries (cubital tunnel syndrome) # More severe muscle impairment # FDP and lumbricals for digits IV and V are impaired, there is unopposed action of the Extensor digitorum Claw hand of the first and second finger Refer maheswari 9th ed