内锁缝合与半结锁定式缝合在肌腱修复中的生物力学比较

Biomechanical comparison between interlocking suture and semi-knot locking suture in tendon repair

目的探讨内锁缝合与半结锁定式缝合在肌腱修复中的生物力学比较。方法选取65只重量300~400 g成年白种猪后肢共130根趾深屈肌腱作为实验对象,按照随机数字表法分为对照组(65根)和研究组(65根),对照组采用半结锁定式缝合,研究组采用内锁缝合。比较两组的缝合时间、2 mm裂隙形成负荷、最大抗张力强度、最大间隙及缝合线抽脱断裂情况。结果两组缝合时间比较,差异无统计学意义(P>0.05);研究组2 mm裂隙形成负荷高于对照组,最大抗张力强度高于对照组,最大间隙长于对照组,差异有统计学意义(P<0.05)。对照组断裂方式均为缝合线线节断裂,研究组均为缝合线自肌腱断端抽脱。结论与半结锁定式缝合相比,内锁缝合生物力学性能更好,能有效地阻止间隙形成,值得推广。

Objective To explore the biomechanical comparison between interlocking suture and half-knot locking suture in tendon repair.Methods A total of 130 flexor digitorum profundus tendons in the hind limbs of 65 adult white pigs weighing 300-400 g were selected as experimental subjects,and were divided into control group(65 tendons)and study group(65 tendons)according to random number table method.The control group was treated with half knot locking suture,while the study group was treated with internal locking suture.The suture time,2 mm crack formation load,maximum tensile strength,maximum gap,and suture detachment fracture condition were compared between the two groups.Results There was no significant difference in suture time between the two groups(P>0.05).The formation load of 2 mm crack in the study group was higher than that in the control group,the maximum tensile strength was higher than that in the control group,and the maximum gap length was longer than that in the control group,with statistically significant differences(P<0.05).The fracture mode in the control group was suture line segment fracture,and in the study group,suture line was pulled from the broken end of tendon.Conclusion Compared with semi-knot locking suture,interlocking suture has better biomechanical properties and can effectively prevent gap formation,which is worth popularizing.