Resident, Department of Orthopaedic Surgery, Wright State University, Dayton, OH.
Resident, Department of Orthopaedic Surgery, Wright State University, Dayton, OH.
J Foot Ankle Surg. 2021 Jul-Aug;60(4):697-701. doi: 10.1053/j.jfas.2021.01.002. Epub 2021 Jan 19.
As sutures have progressed in strength, increasing evidence supports the suture tendon interface as the site where most tendon repairs fail. We hypothesized that suture tape would have a higher load to failure versus polyblend suture due to its larger surface area. Eleven matched pairs of cadaveric Achilles tendons were sutured with 2 mm wide braided ultrahigh molecular weight polyethylene tape (Tape) or 2 mm wide braided ultrahigh molecular weight polyethylene suture (Suture) using a Krackow repair method. All Achilles repair constructs were cyclically loaded, after which they were loaded to failure. Change in suture footprint height, clinical and ultimate load to failure, and location of failure was recorded. Clinical loads to failure for Tape and Suture were 290.4 ± 74.8 and 231.7 ± 70.4 Newtons, respectively (p= .01). Ultimate loads to failure for Tape and Suture were 352.9 ± 108.1 and 289.8 ± 53.7 Newtons, respectively (p = .11). Cyclic testing resulted in significant changes in footprint height for both Tape and Suture, but the 2 sutures did not differ in terms of the magnitude of change in footprint height (p = .52). The suture tendon interface was the most common site of failure for both Tape and Suture. Our results suggest that Tape may provide added repair strength in vivo for Achilles midsubstance rupture.
随着缝线强度的提高，越来越多的证据支持缝线与肌腱的界面是大多数肌腱修复失败的部位。我们假设由于缝线带的表面积较大，其失效负荷会高于多股编织超高分子量聚乙烯缝线。11 对匹配的尸体跟腱采用 2mm 宽编织超高分子量聚乙烯缝线带（带）或 2mm 宽编织超高分子量聚乙烯缝线（缝线），使用 Krackow 修复方法进行缝合。所有跟腱修复结构均进行循环加载，然后进行失效加载。记录缝线足迹高度的变化、临床和失效的最终负荷以及失效的位置。带和缝线的临床失效负荷分别为 290.4 ± 74.8 和 231.7 ± 70.4 牛顿（p=.01）。带和缝线的最终失效负荷分别为 352.9 ± 108.1 和 289.8 ± 53.7 牛顿（p=.11）。循环测试导致带和缝线的足迹高度均发生显著变化，但两种缝线在足迹高度变化的幅度上没有差异（p=.52）。缝线与肌腱的界面是带和缝线失效的最常见部位。我们的结果表明，缝线带在体内可能为跟腱中部断裂提供额外的修复强度。
