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A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects
Published on: December 10, 2021
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Flexor tendon repair using a new suture technique: a comparative in vitro biomechanical study
M Schädel-Höpfner1, J Windolf2, T T Lögters2
1Department of Trauma and Hand Surgery, University Hospital, Moorenstraße 5, 40225, Düsseldorf, Germany. schaedel@uni-duesseldorf.de.
Summary
The novel Marburg 1 four-strand suture technique demonstrates superior gap resistance for flexor tendon repair, outperforming traditional methods and showing promise for clinical application with active motion protocols.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Musculoskeletal Research
Background:
- Flexor tendon injuries require robust surgical repair to restore function.
- Evaluating novel suture techniques is crucial for improving clinical outcomes.
- Biomechanical assessment provides objective data on repair strength and durability.
Purpose of the Study:
- To compare the biomechanical properties of two new four-strand core suture techniques (Marburg 1 and Marburg 2) against three established techniques (modified Kessler, Tsuge, Bunnell).
- To determine the ultimate tensile strength, gap formation resistance, and failure modes of different flexor tendon repair methods.
Main Methods:
- Fifty porcine flexor tendons were repaired using five distinct four-strand core suture techniques.
- Biomechanical testing included assessment of ultimate tensile strength, maximum lengthening, and 1 mm gap formation force.
- Failure modes for each technique were systematically analyzed.
Main Results:
- The modified Kessler technique exhibited the highest ultimate tensile strength (115 N).
- Both Marburg techniques demonstrated substantial strength (Marburg 1: 57 N, Marburg 2: 54 N).
- Marburg 1 achieved the greatest gap resistance, while Bunnell and Tsuge showed the weakest mechanical performance.
Conclusions:
- The Marburg 1 four-strand core suture technique offers excellent biomechanical characteristics, particularly in gap resistance.
- This novel technique is a viable option for clinical flexor tendon repair, especially when combined with active motion protocols.
- Further clinical evaluation is warranted to confirm the efficacy of the Marburg 1 technique in patient populations.
