Abstract
Despite increasing advantages in biomaterials, prosthetic designs, and implant fixation, clinical outcome of total hip arthroplasty (THA) has 10% failure rate after 10 years. Component malposition is well known to be responsible for instability, impingement, excessive wear and early loosening. Computer-assisted procedures are expected to improve the accuracy of the components positioning and also the outcome of total hip replacements. We present the Amplivision. system (Amplitude, Porte-du-Grand-Lyon, Neyron, France) that has been used since October 2005 for total hip replacements at our institution. The surgical technique as well as the advantages of this system is described. The Amplivision© system allows accurate positioning of the acetabular and femoral components during THA and also the control of leg lengthening, offset and stability.
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