Stiffness of axial compression and anteflexion compression was measured at every status on the CMT 4104 testing machine to compare with that of the intact specimens. 每种状态依次在CMT4104多功能力学试验机上进行轴向压缩和前屈压缩测试,分别计算每组的完整标本、骨折内固定标本和植骨内固定标本的轴向压缩刚度和前屈压缩刚度。
Knee flexion contracture deformity af-ter polio is often with abnormal anteflexion angle in lower femur and upper tibia. 脊髓灰质炎后遗膝关节屈曲挛缩畸形常伴有异常的股骨下端与胫骨上端前弓角。
Method: To develop a detailed, three-dimensional, finite element model of a human thoracolumbar motion segments ( T12-L2). The models were assigned to two groups, axial compressive loading group and anteflexion compressive loading group. 方法:建立正常人体胸腰段(T(12)&L2)运动节段的三维有限元模型,将模型划分为2个加载组,即轴向压缩加载组和屈曲压缩加载组。
Results The pressure reaction changed dramatically in the posterior part of the vertebral body during central loading and in the anterior part of the body during anteflexion loading test. 结果椎体在轴向加载和前屈加载时,内在压力分布不同,压力中心不同,轴向加载时椎体后部中央压力反应最显著,前屈加载时椎体前部中央压力反应最显著。