不同拉伸强度厚度的超高分子量聚乙烯缝合线用于内侧半月板后根撕裂拉出修复的生物力学比较

IF 2 Q2 ORTHOPEDICS

Journal of Experimental Orthopaedics Pub Date : 2024-10-15 DOI:10.1002/jeo2.70055

Hibiki Kakiage, Mikiko Handa, Tsuneari Takahashi, Katsushi Takeshita, Hirotaka Chikuda

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引用次数: 0

摘要

目的内侧半月板后根撕裂（MMPRT）是膝关节骨性关节炎的一个危险因素。半月板内侧后根撕裂的主要治疗方法是经胫骨牵引修复，环形缝合仍是金标准手术。本研究旨在探讨使用不同厚度的超高分子量聚乙烯（UHMWPE）缝合带进行环形缝合后半月板-缝合-胫骨（MST）复合体的结构特性。方法本研究使用了 20 个新鲜猪 MMPRT 模型膝关节。所有标本被随机分为两组：(1) 使用 1.3 毫米缝合带（薄组，n = 10；1.3 毫米 PERMATAPE，Mitek 运动医学公司）固定的牵拉修复；(2) 使用 2.5 毫米缝合带（厚组，n = 10；2.5 毫米 PERMATAPE，Mitek 运动医学公司）固定的牵拉修复。采用单环缝合 MS 技术。MST 复合物试样被放置在拉力测试仪上。确定 MST 复合物的结构特性（屈服载荷、最大载荷、衬垫刚度和破坏时的伸长率）。 8 ± 15.2 vs. 39.4 ± 15.5 N；p = 0.53）、衬垫刚度（12.6 ± 8.4 vs. 11.2 ± 5.5 N/mm；p = 0.45）和破坏时伸长率（27.1 ± 19.4 vs. 19.9 ± 10.0 mm；p = 0.32）。结论在 MMPRT 修复中，不同厚度的超高分子量聚乙烯的结构特性相当。此外，1.3 毫米 PERMATAPE 与 2.5 毫米 PERMATAPE 具有相似的修复潜力。证据等级Ⅳ级。

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Biomechanical comparison of ultra-high molecular weight polyethylene sutures of different thicknesses of the tensile strength for pullout repair of medial meniscal posterior root tear

Purpose

Medial meniscus posterior root tears (MMPRT) are a risk factor for knee osteoarthritis. The predominant treatment for MMPRT is transtibial pullout repair, and loop suture remains the gold standard procedure. This study aimed to investigate the structural properties of the meniscus-suture-tibia (MST) complex after loop stitch using ultra-high molecular weight polyethylene (UHMWPE) suture tape of different thicknesses.

Methods

This study used 20 fresh porcine MMPRT model knees. All specimens were randomised into two treatment groups: (1) pullout repair using 1.3 mm suture tape (thin group, n = 10; 1.3 mm PERMATAPE, Mitek Sports Medicine) fixation and (2) pullout repair using 2.5 mm suture tape (thick group, n = 10; 2.5 mm PERMATAPE, Mitek Sports Medicine) fixation. The single-loop stitch MS technique was utilised. The MST complex specimens were placed on a tensile tester. The structural properties of the MST complex (yield load, maximum load, liner stiffness, and elongation at failure) were identified.

Results

No significant differences were found between the thin and thick groups in terms of maximum load (108.8 ± 49.6 vs. 90.1 ± 33.6 N; p = 0.34), yield load (43.8 ± 15.2 vs. 39.4 ± 15.5 N; p = 0.53), liner stiffness (12.6 ± 8.4 vs. 11.2 ± 5.5 N/mm; p = 0.45), and elongation at failure (27.1 ± 19.4 vs. 19.9 ± 10.0 mm; p = 0.32).

Conclusion

The structural properties of the thickness of the different UHMWPE were comparable in MMPRT repair. Additionally, 1.3 mm PERMATAPE may demonstrate similar repair potential as 2.5 mm PERMATAPE.