Suture anchor fixation of the pediatric posteromedial and posterolateral meniscotibial ligament complex matches or exceeds native tissue strength: A cadaveric study

IF 2.7 Q1 ORTHOPEDICS

Journal of ISAKOS Joint Disorders & Orthopaedic Sports Medicine Pub Date : 2025-01-09 DOI:10.1016/j.jisako.2025.100385

Ian Hollyer , Thomas M. Johnstone , Amin Alayleh , Willemijn H. van Deursen , Kelly H. McFarlane , David W. Baird Jr , Calvin K. Chan , Marc Tompkins , Henry B. Ellis , Theodore J. Ganley , Yi-Meng Yen , Seth L. Sherman , Kevin G. Shea

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Abstract

Objectives

This study aimed to compare the biomechanical strength and stiffness of the native posteromedial and posterolateral meniscotibial ligament complex (MTLC) to suture anchor repair of the MTLC.

Methods

Biomechanical testing was performed on 24 fresh-frozen pediatric human knees. Four conditions were tested: native posteromedial MTLC (n = 14), native posterolateral MTLC (n = 14), posteromedial MTLC repair (n = 5), and posterolateral MTLC repair (n = 5). Load to failure and stiffness were measured for all conditions.

Results

The load to failure for the posteromedial suture anchor construct was significantly higher than that for the native MTLC (p < 0.01). The posterolateral suture anchor construct had a significantly greater stiffness than the native MTLC (p = 0.03). Posterolateral MTLC load to failure and posteromedial MTLC stiffness were similar between native tissue and suture-anchor repair. All native MTLCs failed at the meniscus-MTLC interface. The suture anchor groups had various failure modes, including suture pullout and breakage.

Conclusion

Suture anchor fixation can match or exceed the native tissue's load to failure. This study supports the viability of suture anchor–based posterior MTLC repairs of the medial and lateral meniscus in pediatric bone.

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缝合锚固定儿童后内侧和后外侧半月板胫韧带复合物匹配或超过天然组织强度：一项尸体研究。

目的：比较天然后内侧和后外侧半月板韧带复合体（MTLC）与缝合锚定修复MTLC的生物力学强度和刚度。方法：对24例新鲜冷冻儿童膝关节进行生物力学试验。测试了四种情况：天然内侧后MTLC (n=14)，天然后外侧MTLC (n=14)，内侧后MTLC修复（n=5）和后外侧MTLC修复（n=5）。测量了所有条件下的载荷-失效和刚度。结果：后内侧缝合锚定结构的载荷-失效明显高于原生MTLC （p < 0.01）。后外侧缝合锚定结构比原生MTLC具有更大的刚度（p = 0.03）。后外侧MTLC负荷-失效和后内侧MTLC刚度在原生组织和缝合-锚定修复之间相似。所有本机MTLC在半月板-MTLC接口失败。缝线锚组有多种破坏模式，包括缝线拔出和断裂。结论：缝合锚钉固定可达到或超过原生组织的负荷至失效。本研究支持基于缝合锚钉的后路MTLC修复小儿骨内侧和外侧半月板的可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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