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Dislocation in Single-Mobility Versus Dual-Mobility Trapezometacarpal Joint Prostheses
Nina Carlien Theyskens1, Wim Vandesande1
1Sint-Dimpna Ziekenhuis Geel, Belgium.
Hand (New York, N.Y.)
|October 10, 2022
Summary
Dual-mobility trapezometacarpal (TMC) joint prostheses show fewer dislocations than single-mobility implants. De Quervain tendinitis was the most common complication requiring surgery in TMC joint replacement patients.
Area of Science:
- Orthopedic surgery
- Biomaterials science
Background:
- Trapezometacarpal (TMC) joint prostheses are used to treat arthritis.
- Single-mobility (Ivory) and dual-mobility (Moovis) designs exist with differing dislocation profiles.
Purpose of the Study:
- Compare postoperative dislocation rates between single-mobility (Ivory) and dual-mobility (Moovis) TMC prostheses.
- Identify complications requiring revision surgery for each prosthesis type.
Main Methods:
- Retrospective analysis of TMC joint prosthesis patients (2015-2020).
- Data collection on implant type (single vs. dual mobility), dislocations, and complications.
Main Results:
- Significantly higher dislocation rates in single-mobility (Ivory) prostheses (9.7%) versus dual-mobility (Moovis) (1.4%).
- De Quervain tendinitis was the most frequent complication requiring surgery (9.6%).
Conclusions:
- Dual-mobility TMC prostheses demonstrate superior stability with fewer dislocations compared to single-mobility designs.
- De Quervain tendinitis is a primary concern for revision surgery after TMC arthroplasty.
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