三种屈肌腱缝合方法的生物力学研究

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Abstract Objective To perform biomechanical analysis of three flexor tendon suture techniques.Methods A total of 24 porcine flexor digitorum profundus tendons were harvested and randomly divided into 3 groups.The tendons were transversely cut and then repaired using 3 different techniques including Modified Kessler suture，Interlock Stitch Tendon suture and Semi Kessler-Loop lock suture.All of them were combined with running suture.The time required for suturing was recorded and compared among the groups.The 2 mm gap load，the ultimate failure load and the gap at failure were compared.Results Results showed that，in comparison with Modified Kessler suture，Interlock Stitch Tendon suture and Semi Kessler-Loop lock suture could significantly improve the 2 mm gap load and the ultimate failure load of tendon repair.The 2 mm gap load was not significantly different between Interlock Stitch Tendon suture(58.8±8.1)N and Semi Kessler-Loop lock suture(53.7±6.0)N.The ultimate failure load of Interlock Stitch Tendon suture(72.7±6.0)N was greater than Semi Kessler-Loop lock suture(60.4±6.6)N，while Modified Kessler suture(46.5±4.5)N was the lowest.The gap at failure was the largest in Semi Kessler-Loop lock suture(8.5±1.3)mm.The time spent in performing Modified Kessler suture(11.1±1.4)min was shorter than in performing Interlock Stitch Tendon suture(15.4±1.1)min and Semi Kessler-Loop lock suture (15.8±0.9)min.Conclusion In comparison with Modified Kessler suture and Semi Kessler-Loop lock suture，Interlock Stitch Tendon suture can remarkably improve the biomechanical properties of tendon repair and effectively prevent gap formation，which could be useful in clinical applications.

Key words： modified kessler suture interlock stitch tendon suture semi kessler-loop lock suture flexor tendon suture biomechanical study

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