Anterior cruciate ligament (ACL) repair has been recommended as a treatment principle for ACL tears. Several authors have advocated a potential role for primary repair techniques in the ACL decision tree. However, long-term results have been controversial. This study aims to determine the survival of the primarily repaired ACL after dynamic intraligamentary stabilization (DIS) with and without augmentation. Between 2014 and 2019, 102 patients with isolated proximal ACL ruptures underwent DIS repair within 21 days from injury and were available for follow-up either clinically or telephonically after ≥5 years postoperatively. In 45 cases, DIS repair was augmented with collagen fleece wrapping, platelet-rich fibrin (PRF) or both. Failure was defined as traumatic re-rupture or conversion to ACL reconstruction. The patients being available for physical examination underwent a.-p. stability measurement with a KT-1000 device. Functional outcome was measured with the IKDC, Tegner and Lysholm scores. Kaplan-Meier survival analysis, Log-Rank Test and Binominal logistic regression were performed. After a minimum 5-year follow-up, 71/102 (69.6%) DIS repairs were not re-reptured and clinically and/or subjectively stable. Augmentation did not improve survival rates (p = 0.812). The identified factors influencing failure were a younger age and a pre-injury Tegner activity level of ≥7. 95.7% of those patients with an intact ACL repair had normal or near normal knee function based on the IKDC scoring system. The 5-year overall survival rate of DIS was 69.6%. Collagen fleece wrapping and local PRF application did not improve survival. Patients not suffering failure of repair demonstrated high satisfaction. Nevertheless, the results are inferior to those of established ACL reconstruction procedures. Case series, Level IV.

中文翻译：

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胶原包裹和局部富含血小板的纤维蛋白不能提高动态韧带内稳定 ACL 修复的存活率：术后≥5 年的回顾性病例系列

前交叉韧带 (ACL) 修复已被推荐作为 ACL 撕裂的治疗原则。几位作者主张初级修复技术在 ACL 决策树中的潜在作用。然而，长期结果一直存在争议。本研究旨在确定初次修复的 ACL 在动态韧带内稳定 (DIS) 后有无增强的存活率。在 2014 年至 2019 年期间，102 名孤立的近端 ACL 断裂患者在受伤后 21 天内接受了 DIS 修复，并且可在术后 ≥5 年后进行临床或电话随访。在 45 例病例中，DIS 修复通过胶原蛋白羊毛包裹、富含血小板的纤维蛋白 (PRF) 或两者兼而有之。失败被定义为创伤性再破裂或转换为 ACL 重建。可供体检的患者接受了a.-p。使用 KT-1000 设备进行稳定性测量。使用 IKDC、Tegner 和 Lysholm 评分测量功能结果。进行了Kaplan-Meier生存分析、Log-Rank检验和二项逻辑回归。在至少 5 年的随访后，71/102 (69.6%) 的 DIS 修复未重新修复且临床和/或主观上稳定。增强并没有提高生存率（p = 0.812）。确定的影响失败的因素是年龄较小和受伤前 Tegner 活动水平≥7。根据 IKDC 评分系统，95.7% 的 ACL 完整修复患者的膝关节功能正常或接近正常。DIS的5年总生存率为69.6%。胶原蛋白羊毛包裹和局部 PRF 应用并没有提高生存率。没有遭受修复失败的患者表现出很高的满意度。然而，结果不如已建立的 ACL 重建程序。案例系列，IV 级。