This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Radial Nerve Injury, Subject name: Orthopaedics
Saurday night palsy involves - 
Select and explain. 
A. Radial nerve, B. Median nerve, C. Musculocutaneous, D. Ulnar nerve
A: Radial nerve
Answer: A: Radial nerve 
Explanation: Ans. is 'a' i.e., Radial nerve Types of radial nerve palsy and deficit:High Radial Nerve palsyLoss of elbow extention Wrist, thumb and finger dropLow radial nerve palsyWrist, Finger and thumb dropPosterior interosseus nerve injuryLoss of finger and thumb extention No sensory involvementSaturday night palsyCompression of Radial nerve between spiral groove and lateral intermuscular septum (mimics High/low radial nerve palsy)Honeymoon PalsyDue to compession of partners head against the radial nerve while sleeping (similar to Saturday night palsy)