This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
Which nerve is affected in Saturday Night Palsy? 
Select and explain. 
A. Radial nerve, B. Ulnar nerve, C. Anterior Interosseus nerve, D. Median nerve
A: Radial nerve
Answer: A: Radial nerve 
Explanation: Ans. is 'a' i.e., Radial nerve Saturday night palsy (weekend palsy)* In this condition, there is compression of the radial nerve between spiral groove and the lateral intermuscular septum.* It is known after an event which typically happens on a Saturday night weekend when in an inebriated condition, a person slump with his mid-arm compressed between the arm of the chair and his body.