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: Unknown
7yr old girl, injury to the nerve which passes superior to piriformis & winds around the greater sciatic notch. Most likely muscle affected - 
Select and explain. 
A. Gluteusmedius, B. Gluteus Maximus, C. Obturatorintemus, D. Piriformis
A: Gluteusmedius
Answer: A: Gluteusmedius 
Explanation: Ans. is 'a' i.e., Gluteus mediuso Only superior gluteal nerve and vessels pass superior to piriformis(see above explanation),o Superior gluteal nerve supplies gluteus medius and gluteus minimus