Long-Term Survival Rate and Outcomes for Amandys Implant: A 10-Year Minimum Follow-up of 84 Cases

Abstract

Amandys is a radiocarpal pyrocarbon interposition implant indicated for degenerative wrists, showing promising medium-term results. The aim of this study was to evaluate the outcomes of the implant with a minimum follow-up of 10 years. This retrospective monocentric study included 84 implants in 76 patients who underwent the procedure. Preoperative and follow-up assessments included clinical evaluation, functional scores, and X-rays measurements. A total of 41 implants in 39 patients were evaluated at a mean follow-up of 12.64 years. At the final follow-up, average scores for pain (visual analogue scale) was 2.3, Patient-Rated Wrist Evaluation 26.3, QuickDASH 30.8. Grip strength was 71% of contralateral side. Flexion and extension were, respectively, 32 and 37 degrees. The satisfaction rate was 94.9%. There were 10 revision surgeries (13.6%); the survival rate was 86.4%. Radiological findings remained stable over time. The Amandys implant proves to be a durable alternative to wrist fusion and arthroplasty. The survival rate does not deteriorate at long term.

Level of Evidence IV.

Keywords

wrist arthroplasty - pyrocarbon implant - Amandys - interposition - long-term

Patients' Consent

Informed consent was obtained from all patients at the time of each consultation for the use of their clinical data and images for research and publication purposes.

Publication History

Received: 07 December 2024

Accepted: 26 May 2025

Article published online:
23 June 2025

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