Related Experiment Video
Updated: Aug 10, 2026
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Ex vivo Mechanical Loading of Tendon
Published on: May 28, 2007
Optimizing Tension in First Carpometacarpal Prosthesis Using Tenodesis Effect
1Hand and Wrist Surgery Unit, Saint François polyclinic, Nice, France; Hand Emergency Department, Parc Imperial polyclinic, Nice, France.
Hand Surgery & Rehabilitation
|August 8, 2026
Summary
The tenodesis effect test optimizes tension in dual-mobility thumb carpometacarpal (CMC1) arthroplasty. This method enhances thumb function and prosthesis longevity by preventing over-tensioning complications.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Hand Surgery
Background:
- Optimal intraprosthetic tension is crucial for the success of dual-mobility thumb carpometacarpal (CMC1) arthroplasty.
- Over-tensioning can lead to complications, affecting function and implant durability.
Purpose of the Study:
- To describe and validate the tenodesis effect as a reliable intraoperative test.
- To optimize tensioning in dual-mobility CMC1 prostheses and minimize complications.
Main Methods:
- A tenodesis-based assessment involving passive wrist flexion/extension to observe thumb interphalangeal (IP) joint movement after trial implantation.
- Identifying over-tensioning through excessive resistance to passive IP joint motion.
Main Results:
- The tenodesis effect provides a dynamic and stable assessment of thumb prosthesis tension.
- It offers a more accurate reflection of postoperative biomechanics compared to the piston test.
Conclusions:
- The tenodesis effect is a simple, reproducible intraoperative tool for optimizing dual-mobility CMC1 arthroplasty tension.
- This technique improves functional outcomes, enhances prosthesis durability, and reduces risks like wear and migration.
