system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A patient can't extend his wrist after he has met with an accident. He has no sensory loss. Level at which the affected nerve is injured?
assistant
The correct answer is  Patient has wrist drop so radial nerve is involved, there can be sensory sparing in radial nerve injury.