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首页> 外文期刊>Journal of athletic training >Joint Stability Characteristics of the Ankle Complex After Lateral Ligamentous Injury, Part I: A Laboratory Comparison Using Arthrometric Measurement
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Joint Stability Characteristics of the Ankle Complex After Lateral Ligamentous Injury, Part I: A Laboratory Comparison Using Arthrometric Measurement

机译：外侧韧带损伤后踝关节复合物的关节稳定性特征，第一部分：使用关节测量的实验室比较

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Context: The mechanical property of stiffness may be important to investigating how lateral ankle ligament injury affects the behavior of the viscoelastic properties of the ankle complex. A better understanding of injury effects on tissue elastic characteristics in relation to joint laxity could be obtained from cadaveric study. Objective: To biomechanically determine the laxity and stiffness characteristics of the cadaver ankle complex before and after simulated injury to the anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) during anterior drawer and inversion loading. Design: Cross-sectional study. Setting: University research laboratory. Patients or Other Participants: Seven fresh-frozen cadaver ankle specimens. Intervention(s): All ankles underwent loading before and after simulated lateral ankle injury using an ankle arthrometer. Main Outcome Measure(s): The dependent variables were anterior displacement, anterior end-range stiffness, inversion rotation, and inversion end-range stiffness. Results: Isolated ATFL and combined ATFL and CFL sectioning resulted in increased anterior displacement but not end-range stiffness when compared with the intact ankle. With inversion loading, combined ATFL and CFL sectioning resulted in increased range of motion and decreased end-range stiffness when compared with the intact and ATFL-sectioned ankles. Conclusions: The absence of change in anterior end-range stiffness between the intact and ligament-deficient ankles indicated bony and other soft tissues functioned to maintain stiffness after pathologic joint displacement, whereas inversion loading of the CFL-deficient ankle after pathologic joint displacement indicated the ankle complex was less stiff when supported only by the secondary joint structures.
机译：背景：僵硬的机械特性对于研究踝关节外侧韧带损伤如何影响踝复合体的粘弹性特性的行为可能很重要。通过尸体研究可以更好地了解损伤对关节松弛相关的组织弹性特征的影响。目的：通过生物力学确定尸体踝关节复合体在前抽屉和内翻负重模拟损伤前滑行前胫腓韧带（ATFL）和跟腓前韧带（CFL）前后的松弛度和刚度特征。设计：横断面研究。地点：大学研究实验室。患者或其他参与者：7个新鲜冷冻的尸体脚踝标本。干预：使用踝关节流量计在模拟的外侧踝关节损伤之前和之后，所有踝关节均承受负荷。主要观察指标：因变量为前移，前端刚度，内转度和内端刚度。结果：与完整的脚踝相比，孤立的ATFL以及ATFL和CFL的组合切片导​​致前移增加，但末端范围刚度却没有增加。与完整的和ATFL切片的脚踝相比，在负压加载下，组合的ATFL和CFL切片导致运动范围增加，末端范围刚度降低。结论：完整的和韧带不足的脚踝之间的前端范围刚度没有变化，表明骨和其他软组织在病理性关节移位后起到维持僵硬的作用，而病理性关节移位后CFL缺陷脚踝的倒置负荷表明当仅由次要关节结构支撑时，脚踝复合体的僵硬性降低。

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