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Cementless Total Hip Arthroplasty with the Rectangular Titanium Zweymüller StemA Concise Follow-up, at a Minimum of Fifteen Years, of a Previous Report*
Alexander Grübl, MD1; Catharina Chiari, MD1; Alexander Giurea, MD1; Martin Gruber, MD1; Alexandra Kaider, MSc2; Martina Marker, MD1; Harald Zehetgruber, MD1; Florian Gottsauner-Wolf, MD3
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
View Disclosures and Other Information
Grübl A, Chiari C, Gruber M, Kaider A, Gottsauner-Wolf F. Cementless total hip arthroplasty with a tapered, rectangular titanium stem and a threaded cup: a minimum ten-year follow-up. J Bone Joint Surg Am. 2002;84:425-31.
The authors did not receive grants or outside funding in support of their research for or preparation of this manuscript. One or more of the authors received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity (Zimmer, Inc., Winterthur, Switzerland). No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.
Original Publication
Investigation performed at Department of Orthopaedics, Medical University of Vienna, Vienna, Austria

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2006 Oct 01;88(10):2210-2215. doi: 10.2106/JBJS.E.00810
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Abstract

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.

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    Accreditation Statement
    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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