Dislocations are usually posterior, and occasionally anterior, or central through the acetabulum. Posterior dislocation: Hip is flexed, adducted, and internally rotated, and leg is shoened. Anterior dislocation: Hip is flexed, abducted, and externally rotated, and leg is shoened. Central dislocation: Trochanter is displaced medially. One may be able to feel the head of femur rectally. There is no shoening.