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Biomechanical Study of Asymmetric Flexor Tendon Repair Using 3 Different Suture Materials
Shuo Ling Teo1, Rajragavan Sarvananthan1, Rebecca Qian Ru Lim2
1Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
The Journal of Hand Surgery Asian-Pacific Volume
|November 18, 2021
Summary
Comparing suture materials for flexor tendon repair, this study found that Tendo-Loop and FiberLoop provided superior biomechanical performance in asymmetric repairs over Supramid. These findings suggest improved surgical outcomes for tendon repair using these advanced suture materials.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Materials Science
Background:
- The asymmetric technique is a recognized method for flexor tendon repair.
- Optimizing suture material choice can enhance the biomechanical performance of these repairs.
Purpose of the Study:
- To compare the biomechanical performance of asymmetric flexor tendon repairs using three distinct suture materials: Supramid Extra II 4-0, Tendo-Loop 4-0, and FiberLoop 4-0.
Main Methods:
- Thirty porcine flexor tendons were divided into three groups, with each group undergoing repair using one of the specified suture materials.
- Repaired tendons were subjected to mechanical testing to evaluate ultimate tensile strength (UTS), load to 2 mm gap force, stiffness, and failure mechanisms.
Main Results:
- FiberLoop and Tendo-Loop demonstrated significantly higher ultimate tensile strength and load to 2 mm gap force compared to Supramid.
- Stiffness was also significantly greater with FiberLoop and Tendo-Loop than with Supramid.
- Failure mechanisms varied, with Supramid showing 100% suture rupture, Tendo-Loop 90% suture rupture, and FiberLoop 20% suture rupture and 80% suture pullout.
Conclusions:
- Asymmetric flexor tendon repair using Tendo-Loop or FiberLoop yields superior biomechanical performance compared to Supramid.
- The selection of Tendo-Loop or FiberLoop for asymmetric repairs may lead to enhanced clinical outcomes in flexor tendon surgery.
