injuries poisoning
Hip Dislocations
Introduction
Most hip dislocations are posterior and result from severe posteriorly directed force to the knee while the knee and hip are flexed (eg, against a car dashboard). Complications may include Sciatic nerve injury Delayed Osteonecrosis (ON) of the femoral head Associated injuries include Patella fractures Knee Sprains and Meniscal Injuries None Hip Fractures None In patients with posterior dislocations, the leg is shortened, adducted, and internally rotated. Anterior dislocations are rare and result in the leg being abducted and externally rotated. (See Overview of Dislocations .) 