Abstract:

Total hip arthroplasty (THA) is now a routine procedure used to relieve pain and restore function. The results of the procedure depend on several factors: implant positioning, bone implant fixation, bone stock, and restoration of a physiological musculo-articular unit. The prosthesis may be cemented or used without cement. In the latter case, mechanical stability relies on implant fit and fill to reduce micromotion and ensure long-term fixation. This fixation is usually enhanced by surface coating of the stem. While the goal of THA is routinely reached in common osteoarthritis, it is often more difficult when the anatomy of the hip is modified. In these cases, fit can be achieved by designing a stem adapted to the modified anatomy to provide optimal stress transfer.

Authors:

Jean-Manuel Aubaniac, M.D., Jean-Noël A. Argenson, M.D., Ph.D., University of Aix-Marseille, Hopital Sainte-Marguerite, Marseille, France

For Direct IP Access please click this link