Rocha de Faria José Leonardo, de Araújo Igor Farias, Santos Arthur Paiva Grimaldi, Radulski Mariana, Pavão Douglas Mello, More Ari Digiacomo Ocampo, Mozella Alan de Paula, Motta Filho Geraldo da Rocha, Guimarães João Antonio Matheus, Salim Rodrigo, Roesler Carlos Rodrigo de Mello
Knee Surgery Center, National Institute of Traumatology and Orthopedics (INTO), Rio de Janeiro, RJ - Brazil.
School of Medicine from University of São Paulo - USP Ribeirão Preto, SP - Brazil.
Arthrosc Sports Med Rehabil. 2024 Dec 16;7(2):101071. doi: 10.1016/j.asmr.2024.101071. eCollection 2025 Apr.
To compare the stiffness, laxity, and failure rate of ultra-high molecular weight polyethylene (UHMWPE) suture to suture tape measuring 0.15 × 1 mm used in 2 vertical inside-out suture points for the treatment of longitudinal meniscal lesions.
Twenty-eight porcine knees were selected for this controlled biomechanical evaluation in a laboratory setting. The knees were divided into 2 groups: group S (vertical inside-out meniscal sutures using UHMWPE suture) and group T (vertical inside-out meniscal sutures using UHMWPE tape). A 1.5-cm longitudinal lesion was created in the lateral meniscus, followed by 2 vertical sutures on the femoral surface of the meniscus. Biomechanical analyses were performed using a testing machine, including cyclic loading tests and load-to-failure tests.
Stiffness at the 5th cycle was 21.1 ± 1.8 N/mm for group T and 19.2 ± 2.0 N/mm for group S ( = .013). At the 30th cycle, stiffness was 26.1 ± 2.5 N/mm for group T and 23.1 ± 2.4 N/mm for group S ( = .003). At ultimate load to failure, stiffness was 26.5 ± 1.6 N/mm for group CS and 25.0 ± 1.6 N/mm for group T ( = .918). The results showed no significant difference in lesion widening after cyclic testing or in load-to-failure between the 2 groups.
Both the meniscal suture tape and the ultra-high strength suture exhibit similar biomechanical behaviors under radial loads, making both viable options for meniscal repair. The suture tape demonstrated significantly greater stiffness during the test cycles, which can offer more stable initial fixation. However, the actual differences were small, which limits the clinical relevance of the findings.
The findings of this study provide evidence that, compared with UHMWPE suture, suture tape may offer superior initial stability, which is crucial for the healing process of meniscal tissue.
比较超高分子量聚乙烯（UHMWPE）缝线与尺寸为0.15×1毫米的缝带，在用于治疗半月板纵向损伤的2个垂直由内向外缝合点时的刚度、松弛度和失败率。
选取28个猪膝关节用于实验室环境下的这种对照生物力学评估。将膝关节分为2组：S组（使用UHMWPE缝线进行垂直由内向外半月板缝合）和T组（使用UHMWPE缝带进行垂直由内向外半月板缝合）。在外侧半月板制造一个1.5厘米的纵向损伤，随后在半月板股骨表面进行2针垂直缝合。使用测试机进行生物力学分析，包括循环加载试验和破坏载荷试验。
第5个循环时，T组的刚度为21.1±1.8牛/毫米，S组为19.2±2.0牛/毫米（P = 0.013）。第30个循环时，T组刚度为26.1±2.5牛/毫米，S组为23.1±2.4牛/毫米（P = 0.003）。在极限破坏载荷时，CS组刚度为26.5±1.6牛/毫米，T组为25.0±1.6牛/毫米（P = 0.918）。结果显示，循环测试后两组间损伤增宽情况以及破坏载荷均无显著差异。
半月板缝带和超高强度缝线在径向载荷下均表现出相似的生物力学行为，二者都是半月板修复的可行选择。缝带在测试循环中表现出显著更高的刚度，可提供更稳定的初始固定。然而，实际差异较小，这限制了研究结果的临床相关性。
本研究结果提供了证据，表明与UHMWPE缝线相比，缝带可能提供更好的初始稳定性，这对半月板组织的愈合过程至关重要。
