High Accuracy of Restoration of the Individual Hip Anatomy Using Custom-Made Prostheses in Total Hip Arthroplasty.

Abstract

Background/Objectives: Femoral or acetabular deformities are important factors in development of early osteoarthritis. In particular, young patients benefit from individual anatomical restoration by decreasing the risk of early loosening and wear and achieving a good clinical outcome. Methods: This prospective study evaluates the use of a custom-made prosthesis in anterior approach total hip arthroplasty (THA). Pre- and postoperative imaging included conventional X-rays as well as computer tomography (CT) with a specialized protocol to analyze femoral diaphysis width, horizontal and vertical offset, caput-collum-diaphyseal (CCD) angle, leg length, femoral and acetabular anteversion angles, and the position of the center of rotation. Results: A total of 22 hips (11 female, 11 male) with a mean age of 55.8 years underwent THA with a custom-made prosthesis (Symbios^®). Accurate restoration has been shown for offset, leg length, and femoral anteversion. The custom stems showed a good fit within the femoral canal. Conclusions: This custom-made prosthesis has been shown to be a valuable option for the treatment of hip osteoarthritis in young patients, with adequate restoration of the preoperative anatomy.