MECHANICAL-PROPERTIES OF THE HUMAN ANTERIOR CRUCIATE LIGAMENT
MECHANICAL-PROPERTIES OF THE HUMAN ANTERIOR CRUCIATE LIGAMENT
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DOI：
10.1016/0268-0033(95)98193-x
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发表时间：
1995-10-01
影响因子：
1.8
通讯作者：
PATERSON, RS
中科院分区：
文献类型：
--
作者：
JONES, RS;NAWANA, NS;PATERSON, RS
目的是测量股骨-前交叉韧带-胫骨复合体的刚度和强度，该复合体以生理方式测试，在膝关节屈曲角度为0度、10度和30度以及速度为50和500 mm/min时，在胫骨上向前施加力。通过循环5次对韧带进行预处理，使用来自第五个循环的数据来确定韧带在低载荷范围内的刚度。然后在膝关节屈曲30度时测试韧带失效。标本分为中年组（40-60岁）和老年组（>60岁）。对于每组，在不同关节屈曲角度或速度下的韧带刚度之间没有观察到统计学差异。老年组的21个样本中有7个因骨-韧带界面撕脱而失败。所有其他标本均因韧带实质撕裂而失败。极限破坏载荷与体重显著相关。中、老年组分别为体重的1.6倍和1.3倍。本研究强调了识别不同失效模式、校正体重和以生理方式进行测试的重要性。结果允许更好地了解前交叉韧带的力学行为，并提供设计数据的前交叉韧带移植物和prosthes. Relevance，我们的临床经验表明，前交叉韧带经常破裂不协调的收缩过程中的股四头肌机制。本研究的结果，其中的前交叉韧带的力学性能已被测量与力施加在胫骨前方，允许前交叉韧带的力学行为的更完整的理解，并提供前交叉韧带移植物和假体的设计数据。
The aim was to measure the stiffness and strength of the femur-anterior cruciate ligament-tibia complex tested in a physiological manner with a force exerted anteriorly on the tibia, at knee joint flexion angles of 0 degrees, 10 degrees and 30 degrees and at speeds of 50 and 500 mm/min. Ligaments were preconditioned by cycling five times, with data from the fifth cycle used to determine the stiffness of the ligament in a low-load range. The ligaments were then tested to failure with the knee at 30 degrees flexion. The specimens were divided into two groups, middle-aged (40-60) and old (>60). For each group no statistical difference was observed between stiffness of the ligament at different joint flexion angles or speeds. Seven of the 21 specimens in the older age group failed by avulsion at the bone-ligament interface. All the other specimens failed by tears in the substance of the ligament. Ultimate failure load was found to have a significant correlation with bodyweight. It was 1.6 and 1.3 times bodyweight for the middle-aged and older age groups respectively. This study has highlighted the importance of identifying different modes of failure, of making corrections for bodyweight and testing in a physiological manner. The results allow a better understanding of the mechanical behaviour of the anterior cruciate ligament and provide design data for anterior cruciate ligament grafts and prostheses.Relevance-Our clinical experience indicates that the anterior cruciate ligament is frequently ruptured during uncoordinated contraction of the quadriceps mechanism. The results of this study, in which the mechanical properties of the anterior cruciate ligament have been measured with force exerted anteriorly on the tibia, allow a more complete understanding of the mechanical behaviour of the anterior cruciate ligament and provide design data for anterior cruciate ligament grafts and prostheses.