Function Following Mega Total Hip Arthroplasty Compared with Conventional Total Hip Arthroplasty and Healthy Matched Controls

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Abstract
Total hip arthroplasty (THA) with the use of a Mega prosthesis was a successful surgical procedure in the management of tumors of the hip as well as in revision THA with loss of bone stock. Passive hip motion and strength of hip muscles, walking ability, and activities of daily living in nine such cases compared well with the function following conventional THA. Limp and positive Trendelenburg sign were more common after Mega THA. Dislocation of the prosthesis occurred in 2/14 cases. Fracture of the femoral condyle occurred in one case. Another case had stem fatigue failure of a thin stem.

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