Sciatic nerve palsy may occur a complication following which injury?: (A) Trochanteric fracture, (B) Fracture neck of femur, (C) Posterior dislocation of hip joint, (D) Anterior dislocation of hip joint
Answer is C. In posterior hip dislocation, head of femur is pushed out of the acetabulum posteriorly. Since the sciatic nerve lies behind the posterior wall of the acetabulum it is damaged in posterior hip dislocation. Ref: Essential Ohopedics By Maheshwari, 2nd Edition, Pages 111-119.