Forces acting on the anterior meniscotibial ligaments
Forces acting on the anterior meniscotibial ligaments
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作用于前半月板韧带的力
DOI：
10.1007/s00167-011-1708-5
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
L. Dürselen
中科院分区：
文献类型：
--
作者：
A. Seitz;R. Kasisari;L. Claes;A. Ignatius;L. Dürselen
目的本研究的目的是研究在各种载荷条件下人体前半月板胫骨附着结构中发生的力。方法使用先前描述的膝关节模拟器将12个人体膝关节暴露于8种载荷条件（胫骨旋转和内翻/外翻应力）。随后，使用材料试验机对关节进行轴向压缩（在0° 30°和60°膝关节屈曲时为1，000 N）。然后，我们进行了拉伸试验，以破坏韧带。最后，我们使用的应变发生在加载测试和力-伸长率图从拉伸试验中获得递归评估所产生的forces.ResultsIn前ducotibial韧带，我们发现最大平均应变为3.8 ± 2.3%下的外部时刻和1.5 ± 0.9%的轴向压缩。前外侧胫前韧带的极限载荷为454 ± 220 N，前内侧胫前韧带的极限载荷为397 ± 275 N，我们估计膝关节模拟器测试的最大力为50.2 N，轴向压缩测试的最大力为22.6 N。骨置换植入物和同种异体移植物在其骨插入处不需要非常刚性的固定。然而，它仍然是未知的，什么水平的力发生在创伤情况下或冲击膝关节负荷下的胫前韧带。此外，本研究的结果有助于优化髋臼再固定和改善髋臼替代材料的性能，如组织工程化人工髋臼。此外，该结果可用于验证膝关节的有限元模型，主要关注半月板及其与胫股接触压力的生物力学相关性。
PurposeThe purpose of this study was to investigate the forces occurring in human anterior meniscotibial attachment structures under various loading conditions.MethodsTwelve human knee joints were exposed to eight loading conditions (tibial rotations and varus/valgus stress) using a previously described knee joint simulator. Subsequently, the joints were axially compressed (1,000 N at 0° 30° and 60° knee flexion) using a materials testing machine. Then, we performed a tensile test to failure of the ligaments. Finally, we used the strains that occurred during the loading tests and the force–elongation diagrams obtained from the tensile test to recursively assess the resulting forces.ResultsIn the anterior meniscotibial ligaments, we found maximum mean strains of 3.8 ± 2.3% under external moments and 1.5 ± 0.9% for axial compression. With an ultimate load of 454 ± 220 N for the anterolateral meniscotibial ligament and 397 ± 275 N for the anteromedial meniscotibial ligament, we estimated maximum forces of up to 50.2 N for the knee simulator tests and 22.6 N for the axial compression tests.ConclusionsThe low forces found in the meniscal ligaments suggest that for normal daily activities, meniscal replacement implants and allografts do not require a very rigid fixation at their bony insertions. However, it remains unknown, what level of force occurs in the meniscotibial ligaments under traumatic situations or impact knee loads. Furthermore, the results of the present study could help to optimize meniscal re-fixation and to improve the properties of meniscal replacement materials, such as tissue-engineered artificial menisci. Moreover, the results could be used for the validation of finite element models of the knee joint with the main focus on the meniscus and its biomechanical relevance for tibiofemoral contact pressure.
影响因子：
2.4
作者：
Villegas, Diego F.;Maes, Jason A.;Donahue, Tammy L. Haut
通讯作者：
Donahue, Tammy L. Haut
影响因子：
2.4
作者：
Hauch, Karen N.;Villegas, Diego F.;Donahue, Tammy L. Haut
通讯作者：
Donahue, Tammy L. Haut