The ball portion of the hip joint (the femoral head) is removed and the bone is smoothed, if necessary, so that no bone to bone contact occurs between the pelvis, which contains the now empty socket and the remaining portion of the femur. The joint is not stabilized, it is destroyed. While that sounds bad, this surgery will provide reasonable comfort. A “false joint” forms, consisting of fibrous scar tissue around the bone end. This forms in the muscles over the hips which fortunately are strong enough to provide some stability. It is less painful than leaving the dislocated femoral head rubbing against the pelvic bone.