When a patient has hip replacement surgery, the femur or upper part of the thighbone is replaced with a metal ball. The pelvic bone and hip socket are resurfaced with a plastic liner and metal shell to stabilize the hip and allow the patient to have reduced or no hip pain while regaining a more functional quality of life. For fewer restrictions, reduced risk of hip dislocation, and early mobility, Dr. Raj - Beverly Hills Orthopedic Institute is up to date with the latest in hip surgery technology.