This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pelvis and Hip injuries, Subject name: Orthopaedics
Sciatic nerve palsy may occur in the following injury- 
Select and explain. 
A. Posterior dislocation of hip joint, B. Fracture neck of femur, C. Trochanteric fracture, D. Anterior dislocation of hip
A: Posterior dislocation of hip joint
Answer: A: Posterior dislocation of hip joint 
Explanation: *Injury to sciatic nerve:-The nerve is vulnerable to injury where it lies behind the posterior wall of acetabulum. Ref: Maheshwari 9th/e p.131 &4th/e p.127