Objectives: The Tactys® prosthesis is an anatomical unconstrained sliding implant with 4 modular components, designed for proximal interphalangeal arthroplasty. The main objective of our study was to evaluate medium-term functional outcomes at a minimum follow-up of 1 year.
Materials And Methods: Forty-eight implants were studied, with a mean follow-up of 4.8 years. The study retrospectively analyzed functional, clinical and radiological results. Complications and re-interventions were also analyzed.
Results: Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) and Patient-Rated Wrist Evaluation (PRWE) scores improved from 40.9 to 17.7 and from 47. 1 to 11 .2, respectively (p < 0.001) at last follow-up. Seventy-seven percent of patients rated their results as good or very good, and 83% were willing to undergo the procedure again. Pain on VAS improved significantly from 7.9 to 0.8/10 (p < 0.001). There was no significant difference in range of motion (53° vs 48°), grip strength (14.9 kgF vs 14.6 kgF), or pinch strength (3.4 kgF vs 3.4 kgF). There were no cases of fracture or loosening of implants. Periarticular ossification without functional impairment was observed in 31 patients. Axial deviation was generally corrected. Three surgical re-interventions were required, including 2 implant revisions using a silicone spacer. Five-year implant survival was 94%.
Conclusion: The Tactys® prosthesis was a reliable and effective option for the management of proximal interphalangeal osteoarthritis. Patient satisfaction was generally good, with improvement in pain and function; however, longer-term follow-up is needed.
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