The aim of the present study is to evaluate ultrasonic suture welding in an animal model of rotator cuff repair with biomechanical and histological analyses. 46 Shoulders of 23 rabbits were randomly assigned to the following treatment groups: SHAM (N = 15), KNOT (N = 15), WELD (N = 16). Supraspinatus defects were surgically created and repaired with either Ethibond for KNOT shoulders or nylon for WELD shoulders. 18 Weeks post-operatively, all animals were sacrificed, and the shoulders underwent either biomechanical testing or histologic analysis. The maximum stress of the SHAM (20.63N/mm 2) group was significantly greater than both the KNOT (10.24N/mm 2) and WELD (8.32N/mm2) groups (P 0.001). The stress of the KNOT and WELD groups were significantly lower than the SHAM group, but no differences were observed between KNOT and WELD groups. Both ultrasonic suture welding and arthroscopic knot tying are functionally efficacious, and either method can be utilized according to surgeon preference.
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机译:本研究的目的是通过生物力学和组织学分析评估在肩袖修复的动物模型中的超声缝合焊接。将23只兔子的46只肩膀随机分为以下治疗组:SHAM(N = 15),KNOT(N = 15),WELD(N = 16)。手术产生的上睑下垂缺损用Ethibond(KNOT肩)或尼龙(WELD)肩修复。术后18周,处死所有动物,并对肩膀进行生物力学测试或组织学分析。 SHAM组的最大应力(20.63N / mm 2 super>)显着大于KNOT(10.24N / mm 2 super>)和WELD(8.32N / mm < super> 2 super>)组(P <0.001)。 KNOT和WELD组的压力明显低于SHAM组,但在KNOT和WELD组之间没有观察到差异。超声缝合缝合和关节镜打结在功能上都是有效的,并且可以根据外科医生的喜好使用任何一种方法。
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