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Cementless Total Hip Arthroplasty with the Rectangular Titanium Zweymüller Stem: A Concise Follow-up, at a Minimum of Fifteen Years, of a Previous Report*

Grübl, Alexander MD; Chiari, Catharina MD; Giurea, Alexander MD; Gruber, Martin MD; Kaider, Alexandra MSc; Marker, Martina MD; Zehetgruber, Harald MD; Gottsauner-Wolf, Florian MD

Journal of Bone & Joint Surgery - American Volume: October 2006 - Volume 88 - Issue 10 - p 2210–2215
doi: 10.2106/JBJS.E.00810
Scientific Articles
Supplementary Content

Between October 1986 and November 1987, 208 total hip arthroplasties were performed with use of the cementless Zweymüller stem and a threaded cup in 200 consecutive patients. Of 102 patients (108 hips) who were available for follow-up at a minimum of 180 months postoperatively, eighty-three (eighty-nine hips) had the primary joint replacement still intact. No stem had been revised because of aseptic loosening, but we found various degrees of osteolysis around sixteen (18%) of the implants. The probability of survival of the stem at fifteen years was 0.98 (95% confidence interval, 0.96 to 1.00). The probability of survival of the cup was 0.85 (95% confidence interval, 0.79 to 0.91).

Level of Evidence: Therapeutic Level IV. See Instructions to Authors for a complete description of levels of evidence.

1 Department of Orthopaedics, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria. E-mail address for A. Grübl: alexander.gruebl@meduniwien.ac.at

2 Alexandra Kaider, MSc Core Unit for Medical Statistics and Informatics, Medical University of Vienna, Spitalgasse 23, A-1090 Vienna, Austria

3 Florian Gottsauner-Wolf, MD Department of Orthopaedics, General Hospital Krems, Mitterweg 10, A-3500 Krems, Austria

Copyright 2006 by The Journal of Bone and Joint Surgery, Incorporated
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