This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital Dislocation of Hip (C.D.H.), Subject name: Orthopaedics
Posterior dislocation of Hip can damage which nerve- 
Select and explain. 
A. Superior gluteal, B. Sciatic, C. Inferior gluteal, D. Femoral
B: Sciatic
Answer: B: Sciatic 
Explanation: Ans. is 'b' i.e., SciaticComplications of posterior dislocation of hipo Complications of posterior dislocation areInjury to sciatic nerve The nerve is vulnerable to injury where it lies behind the posterior wall of acetabulum.Avascular necrosis of femoral head) Damage to the femoral headMyositis ossificans (Post-traumatic ossification)Osteoarthritis