Hip replacement is a surgical procedure in which the hip joint is replaced by a prosthetic implant. Hip replacement surgery can be performed as a total replacement or a hemi (half) replacement. Such joint replacement orthopaedic surgery is generally conducted to relieve arthritis pain or fix severe physical joint damage as part of hip fracture treatment. A total hip replacement (total hip arthroplasty) consists of replacing both the acetabulum and the femoral head while hemiarthroplasty generally only replaces the femoral head. Hip replacement is currently the most common orthopaedic operation, though patient satisfaction short and long term varies widely.

Types of hip replacement:
1. CEMENTED HIP REPLACEMENT:- Fixation of implants done using bone cement at both acetabular and femoral side.
2. UNCEMENTED HIP REPLACEMENT:- Fixation is by the bone ingrowth and ongrowth by the insitu quality of implants having hydroxyapatite coating and grid blasted designs.