Displacement of the medial meniscus within the passive motion characteristics of the human knee joint: an RSA study in human cadaver knees
Displacement of the medial meniscus within the passive motion characteristics of the human knee joint: an RSA study in human cadaver knees
复制标题
DOI：
10.1007/s00167-004-0511-y
复制
发表时间：
2005-05-01
影响因子：
3.8
通讯作者：
Verdonschot, N
中科院分区：
文献类型：
--
作者：
Tienen, TG;Buma, P;Verdonschot, N
本研究的目的是验证一个体外人体尸体膝关节模型，用于评价膝关节屈曲过程中的关节运动。问题是我们的模型是否显示出与早期体内骨骼运动研究中发现的骨骼位移相当的骨骼位移。此外，我们确定了胫骨扭矩对膝关节屈曲时胫骨位移的影响。将三个钽珠插入六个人尸体关节的内侧半月板中。将膝关节放置并加载在载荷装置中，并通过RSA确定在有和没有内部胫骨（IT）和外部胫骨（ET）扭矩的膝关节屈曲和伸展期间珠的运动。在无胫骨扭矩的屈曲过程中，所有胫骨平台均向后和向外移动。前角在后向和侧向的偏移量均显著大于后角。内部胫骨扭矩导致胫骨平台上的路径向前移位。外部胫骨扭矩导致通路后移。在膝关节前30 °屈曲时，胫骨外扭矩限制了踝关节的位移。本实验中半月板的位移与体内MRI研究中描述的位移相似。此外，胫骨扭矩的应用证实了半月板后角的相对固定。在胫骨外扭矩期间，前30 °屈曲期间胫骨平台上的路径的后移可能受到附着的膝关节囊或股骨髁的限制。该模型揭示了在简单膝关节屈曲期间以及被动膝关节运动的外部极限期间的代表性膝关节位移。
The objective of this study was to validate an in vitro human cadaver knee-joint model for the evaluation of the meniscal movement during knee-joint flexion. The question was whether our model showed comparable meniscal displacements to those found in earlier meniscal movement studies in vivo. Furthermore, we determined the influence of tibial torque on the meniscal displacement during knee-joint flexion. Three tantalum beads were inserted in the medial meniscus of six human-cadaver joints. The knee joints were placed and loaded in a loading apparatus, and the movements of the beads were determined by means of RSA during knee-joint flexion and extension with and without internal tibial (IT) and external tibial (ET) torque. During flexion without tibial torque, all menisci moved in posterior and lateral direction. The anterior horn showed significantly greater excursions than the posterior horn in both posterior and lateral direction. Internal tibial torque caused an anterior displacement of the pathway on the tibial plateau. External tibial torque caused a posterior displacement of the pathway. External tibial torque restricted the meniscal displacement during the first 30 degrees of knee-joint flexion. The displacements of the meniscus in this experiment were similar to the displacements described in the in vivo MRI studies. Furthermore, the application of tibial torque confirmed the relative immobility of the posterior horn of the meniscus. During external tibial torque, the posterior displacement of the pathway on the tibial plateau during the first 30 degrees of flexion might be restricted by the attached knee-joint capsule or the femoral condyle. This model revealed representative meniscal displacements during simple knee-joint flexion and also during the outer limits of passive knee-joint motion.