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
Finger drop with no sensory loss is an injury of?
assistant
The correct answer is  High radial nerve injury - brachioradialis paralyzed+ wrist drop + finger drop + sensory loss Low radial nerve injury - wrist drop + finger drop + sensory loss ( brachioradialis is spared) PIN injury - finger drop Pure motor nerveand hence there is no sensory loss in its injury. Patient cannot extend the metacarpophalangeal joints but wrist extension is preserved as extensor carpi radialis longus is spared Superficial - sensory loss