Accuracy of Positioning and Risk Factors for Malpositioning Custom-Made Femoral Stems in Total Hip Arthroplasty-A Retrospective Multicenter Analysis.

Autor: Anderson PM; Department of Orthopedics, König-Ludwig-Haus, University of Würzburg, Brettreichstraße 11, 97070 Wuerzburg, Germany., Heinz T; Department of Orthopedics, König-Ludwig-Haus, University of Würzburg, Brettreichstraße 11, 97070 Wuerzburg, Germany., Rak D; Department of Orthopedics, König-Ludwig-Haus, University of Würzburg, Brettreichstraße 11, 97070 Wuerzburg, Germany., Arnholdt J; Department of Orthopedic Surgery, Klinikum Grosshadern, Ludwig-Maximilians-University of Munich, Marchioninistraße 15, 81377 Munich, Germany., Holzapfel BM; Department of Orthopedic Surgery, Klinikum Grosshadern, Ludwig-Maximilians-University of Munich, Marchioninistraße 15, 81377 Munich, Germany., Dorsch S; Department of Orthopedics, König-Ludwig-Haus, University of Würzburg, Brettreichstraße 11, 97070 Wuerzburg, Germany., Weißenberger M; Department of Orthopedics, König-Ludwig-Haus, University of Würzburg, Brettreichstraße 11, 97070 Wuerzburg, Germany., von Eisenhart-Rothe R; Department of Orthopaedics and Sports Orthopaedics, Klinikum Rechts der Isar, School of Medicine, Technical University of Munich, Ismaninger Straße 22, 81675 Munich, Germany., Jaenisch M; Department of Orthopedics and Trauma Surgery, University Hospital Bonn, Venusberg Campus 1, 53127 Bonn, Germany., Ertl M; Department of Orthopaedic Surgery, Klinikum Rechts der Isar, Technical University of Munich, Ismaninger Straße 22, 81675 Munich, Germany., Wagner M; Department of Orthopaedics and Trauma Surgery, Klinikum Nürnberg Campus Süd, Paracelsus Medical University, Breslauer Straße 201, 90472 Nürnberg, Germany., Windhagen H; Department of Orthopaedic Surgery, Annastift Hannover, Medical School Hannover, Borries Str. 1-6, 30625 Hannover, Germany., Rudert M; Department of Orthopedics, König-Ludwig-Haus, University of Würzburg, Brettreichstraße 11, 97070 Wuerzburg, Germany., Jakuscheit A; Department of Orthopedics, König-Ludwig-Haus, University of Würzburg, Brettreichstraße 11, 97070 Wuerzburg, Germany.
Jazyk: angličtina
Zdroj: Journal of personalized medicine [J Pers Med] 2023 Aug 22; Vol. 13 (9). Date of Electronic Publication: 2023 Aug 22.
DOI: 10.3390/jpm13091285
Abstrakt: Total hip arthroplasty (THA) is commonly performed using off-the-shelf implants. In the case of a severe mismatch between the anatomy of the proximal femur and the geometry of the stem, the use of custom-made stems might become necessary. The goal of this study was to investigate the precision of the implantation of custom-made stems of one manufacturer (CTX stem, AQ Implants) and to determine risk factors for malpositioning. All patients receiving a custom-made CTX stem between 2014 and 2020 at six high-volume academic centers were retrospectively recruited. The achieved position of the stem, as determined by stem version, stem coronal angle, and implantation depth on radiographs, was compared to the plan. The influence of radiographic and demographic parameters on the position was investigated. The results revealed a high variability of the achieved implant position in relation to the preoperative plan. While the stem coronal angle only differed slightly from the intended position, the stem version and the implantation depth showed a high frequency and amount of deviation. Right stems showed significantly higher positions than planned. Surgeons must be aware of this potential problem when implanting custom-made stems.
Databáze: MEDLINE
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