Long-Term Outcomes of RegJoint™ implant vs. Tendon Interposition in Thumb Arthritis Treatment (2025)
This 15-year randomized controlled trial compares the effectiveness of the RegJoint™ poly-l/d-lactide implant with traditional tendon interposition surgery in patients suffering from trapeziometacarpal inflammatory arthritis. The study evaluates clinical outcomes, joint function, pain levels, and implant safety over an extended follow-up period.
Key findings suggest that:
- RegJoint™ provides comparable long-term results to tendon interposition.
- Patients experienced sustained pain relief and functional improvement.
- The biodegradable nature of the implant supports tissue integration without long-term complications.
This research supports the use of bioabsorbable polymer implants as a viable alternative to traditional surgical methods in treating thumb base arthritis.
See the entire publication by Tiihonen, R., Hackenberg, T., & Waris, E. (2025). Poly-l/d-Lactide Implant (RegJoint) Versus Tendon Interposition for Trapeziometacarpal Inflammatory Arthritis: A 15-Year Follow-up of a Randomized Controlled Clinical Trial. Hand (New York, N.Y.), Article 15589447251364572. https://doi.org/10.1177/15589447251364572