Evolution of the experience with the semiconstrained distal radioulnar joint arthroplasty: A single center review of medium-term outcomes and complications

Purpose Replacement of the distal radioulnar joint (DRUJ) using a semiconstrained implant arthroplasty (Aptis) has demonstrated the capacity to restore function. The aim of this study was to investigate medium-term outcomes and navigate the effect of increasing experience with this implant, and compare the results with other follow-up studies. Methods We retrospectively investigated 36 DRUJ implant arthroplasties in 34 patients operated on between 2010 and 2021 for complications and revision surgeries. The average follow-up time was 4.4 years. In 15 patients with available data and surviving implant over time, we compared pre- and postoperative pain level and total active motion, as well as weight-bearing ability. Results Overall pain reduction was significant. Active range of motion and weight bearing ability was stable over time. We observed no infection. Revision surgery was necessary in 27% of cases, and the overall survival rate of the implant was 91% with a mean follow-up of 53 months. Conclusion We conclude that implant arthroplasty of the DRUJ reduces pain and preserves function. An extremely precise surgical technique is mandatory to avoid complications. Type of study/level of evidence Prognosis/IIb.