• S Kohler and V Nahmmacher.
• HELIOS Clinic for Orthopaedics, Barbarastrasse 11, Bleicherode, Germany. steffen.kohler@helios-kliniken.de
• Z Orthop Unfall. 2007 Sep 1; 145 Suppl 1: S13-9.

AimThe aim of the study was the evaluation of the medium- to long-term results of the cementless Bicontact SD hip arthroplasty, which was designed specially for narrow femoral medullary cavities.MethodFrom February 1992 to December 1996 115 patients (123 joints) were treated with a Bicontact SD stem and various cup implants through a posterior approach. In one third of cases, the indication was dysplastic osteoarthritis of various degrees of severity.ResultsBetween November 2006 and May 2007 90 patients (98 hip joints) were followed up in a retrospective study after an average of 12.2 (10.1-15.1) years. The average Harris Hip Score was 93 (60-100) points and the Merle d'Aubigné score was 16.7 (5-18) points. A stem implant had to be regarded as loosened according to radiological criteria. One patient died 7 days postoperatively of a pulmonary embolism.ConclusionThe clinical and radiological results confirmed the proximal fixation concept in dysplastic femurs and narrow medullary cavities.

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