Bone Mineral Changes Around Stemless and Stemmed Cementless Femoral Components

Periprosthetic Bone Mineral Changes Around Stemless and Stemmed Cementless Femoral Components

The purpose of this study is to determine if there is a difference in stress shielding and bone resorption of the proximal femur in two anatomical stem total hip designs.

Stress shielding related bone resorption in the proximal femur after total hip arthroplasty continues to be a problem. The purpose of this prospective, randomized study was to evaluate which of the two anatomical stem designs achieved a more physiological load transfer by assessing bone mineral changes in the proximal femur after stem implantation.

Inclusion Criteria:

• Osteoarthritis of hip joint requiring total hip arthroplasty

Exclusion Criteria:

• Neurologic disorders affecting motor function of lower extremity
• foot and ankle disorders limiting ambulation of the patient
• Patients with bone metabolic disorders other than osteoporosis which prevents normal bone metabolism
• Multi-systemic inflammatory arthritis which debilitates patients other than hip joint.