Open Access
CC BY 4.0 · J Wrist Surg
DOI: 10.1055/a-2528-0045
Scientific Article

CT Motion-Analysis of Implant Loosening in Total Wrist Arthroplasty: A Pilot Study

Daniel Reiser
1   Department of Orthopedics and Hand Surgery, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
,
Sanj Kakar
2   Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota
,
Olof Sandberg
3   Sectra AB, Linköping, Sweden
,
Per Wretenberg
1   Department of Orthopedics and Hand Surgery, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
,
1   Department of Orthopedics and Hand Surgery, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
› Institutsangaben

Funding This work was supported by the Region Örebro län (ALF 979910).
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Abstract

Introduction Total wrist arthroplasty (TWA) is a motion-preserving treatment option for wrist arthritis. High-precision measurement methods for implant migration such as computed tomography motion-analysis (CTMA) can potentially detect poor implant fixation. The aim of this pilot study was to assess CTMA as a complementary method to diagnose aseptic loosening of TWA.

Materials and Methods Three patients with a TWA and wrist pain during activity underwent induced displacement CT (CTMA) with alternated provocations as a complement to plain radiographs.

Results Two of the three patients had displacement of the carpal component on CTMA. The radial component was stable in all cases. The tool was adapted to clinical routine use.

Conclusions CT motion-analysis could be a valuable adjunct to plain radiographs in assessing component loosening in TWA.



Publikationsverlauf

Eingereicht: 12. November 2024

Angenommen: 28. Januar 2025

Artikel online veröffentlicht:
21. Februar 2025

© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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