Abstract Considering that optimal contact area and pressure at the tendon-bone interface are associated with better footprint repair and outcomes, the aim of this study was to compare the performance of standard double-row, transosseous equivalent (TOE), and partial articular supraspinatus tendon avulsion (PASTA) techniques for the treatment of full-thickness tears of the supraspinatus tendon using 3D finite element models. Loading consisted, alternately, in a preloading of 10 N and 20 N of the sutures. The footprint coverage of the standard double-row, TOE, and PASTA techniques was estimated to represent 19%, 30%, and 35%, respectively, of the repair area. The average contact pressures followed an opposite trend, i.e., the largest was estimated for the standard double-row technique, whereas the lowest was estimated for the PASTA technique. Despite the present study advancing the computational modelling of rotator cuff repair, and the results being consistent with the literature, its findings must be evaluated cautiously, bearing in mind its limitations.

中文翻译：

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3 种冈上肌腱修复技术的比较——3D 计算有限元分析

摘要 考虑到肌腱-骨界面的最佳接触面积和压力与更好的足印修复和结果相关，本研究的目的是比较标准双排、经骨等效 (TOE) 和部分关节冈上肌腱的性能。使用 3D 有限元模型治疗冈上肌腱全层撕裂的撕脱 (PASTA) 技术。加载交替地包括预加载 10 N 和 20 N 的缝合线。标准双排、TOE 和 PASTA 技术的覆盖面积估计分别占修复区域的 19%、30% 和 35%。平均接触压力遵循相反的趋势，即标准双排技术估计最大，而 PASTA 技术估计最低。