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Journal of Bone and Joint Surgery - British Volume, Vol 87-B, Issue 9,
1210-1215.
doi: 10.1302/0301-620X.87B9.16107 Copyright © 2005 by British Editorial Society of Bone and Joint Surgery Cementless total hip arthroplasty using a threaded cup and a rectangular tapered stemFOLLOW-UP FOR TEN TO 17 YEARSM. Pospischill, MD, Orthopaedic Trainee1; and K. Knahr, MD, Professor of Orthopaedic Surgery, Head of Department11 Orthopaedic Hospital ViennaSpeising, Speisingerstrasse 109, A-1130 Vienna, Austria. Correspondence should be sent to Dr. K. Knahr; e-mail: karl.knahr{at}oss.at
We carried out a clinical and radiological review of 103 cementless primary hip arthroplasties with a tapered rectangular grit-blasted titanium press-fit femoral component and a threaded conical titanium acetabular component at a mean follow-up of 14.4 years (10.2 to 17.1). The mean Harris hip score at the last follow-up was 89.2 (32 to 100). No early loosening and no fracture of the implant were found. One patient needed revision surgery because of a late deep infection. In 11 hips (10.7%), the reason for revision was progressive wear of the polyethylene liner. Exchange of the acetabular component because of aseptic loosening without detectable liner wear was carried out in three hips (2.9%). After 15 years the survivorship with aseptic loosening as the definition for failure was 95.6% for the acetabular component and 100% for the femoral component.
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