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…Conventional hip replacement has the potential risks of postoperative dislocation, bone loss extending to the metaphyseal and diaphyseal femur, and gross migration of the femoral component. Stress shielding of the proximal femur can occur with rigid intramedullary fixation of stiff metallic THA stems. Conventional joint replacement does not provide a lasting solution to suit the dynamic lifestyle of a young active population. Revision surgery with conventional joint replacement is inevitable in the young population and is associated with high morbidity.

Hip resurfacing is an alternative form of hip arthroplasty that conserves proximal femoral bone.^{[1, 2, 3, 4, 5, 6]} Bone conservation is attractive to young and active patients. Other advantages of hip resurfacing over conventional THA include added hip stability from the larger diameter of the prosthetic femoral component and more accurate restoration of leg length, femoral offset, and femoral anteversion.

Thus, proponents of hip resurfacing claim that its advantages include a greater range of motion of the hip joint after surgery, a lower rate of dislocation, less prosthetic bearing wear, easier revision surgery, and less likelihood of stress-shielding of the proximal femur. Hip resurfacing may therefore be particularly suitable for young and active patients…