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Trochanteric osteotomy in primary and revision total hip arthroplasty: risk factors for non-union

Wieser, Karl ; Zingg, Patrick ; Dora, Claudio

In: Archives of Orthopaedic and Trauma Surgery, 2012, vol. 132, no. 5, p. 711-717

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    Title
    • Trochanteric osteotomy in primary and revision total hip arthroplasty: risk factors for non-union
    Author
    • Wieser, Karl. Department of Orthopaedics, University of Zurich, Balgrist Hospital, Forchstrasse 340, CH 8008, Zurich, Switzerland
    • Zingg, Patrick. Department of Orthopaedics, University of Zurich, Balgrist Hospital, Forchstrasse 340, CH 8008, Zurich, Switzerland
    • Dora, Claudio. Department of Orthopaedics, University of Zurich, Balgrist Hospital, Forchstrasse 340, CH 8008, Zurich, Switzerland
    Document Type
    • Postprint
    Language
    • English
    Published in
    • Archives of Orthopaedic and Trauma Surgery, 2012, vol. 132, no. 5, p. 711-717. Springer-Verlag
    Other Version
    OAI-PMH Identifier
    • oai:doc.rero.ch:319093
    Summary
    Background: Trochanteric osteotomies (TO) facilitate exposure and "true hip reconstruction” in complex primary and revision total hip arthroplasty (THA). However, non-union represents a clinically relevant complication. The purpose of the present study was to identify risk factors for trochanteric non-union. Methods: All cases of THA approached by TO during the past 10years were analyzed with respect to potential risk factors for non-union. Results: In 298 cases complete data were available for analysis. Trochanteric union occurred in 80.5%, fibrous union in 5.4% and non-union 14.1%. Risk factor analysis revealed a four times higher risk for non-union in anterior trochanteric slide osteotomies compared to extended trochanteric osteotomies and a three times higher risk in cemented versus non-cemented stems. Multiple logistic regression analysis revealed patient's age and use of cement to be independent risk factors for non-union. Conclusions: Femoral cementation and increasing age negatively influence the union of trochanteric osteotomies