Physiological sagittal plane patellar kinematics during dynamic deep knee flexion
Physiological sagittal plane patellar kinematics during dynamic deep knee flexion
复制标题
DOI：
10.1007/s00264-013-1958-6
复制
发表时间：
2013-08-01
影响因子：
2.7
通讯作者：
Banks, Scott A.
中科院分区：
文献类型：
--
作者：
Hamai, Satoshi;Dunbar, Nicholas J.;Banks, Scott A.
侧位X线片可以很容易地拍摄，并揭示了大量有关膝盖骨的信息。本研究的目的是获得负重状态下膝关节屈曲全过程的矢状面运动学数据。利用动态X线片测量了9个健康膝关节在0~165A°膝关节屈曲范围内，膝关节相对于股骨和胫骨的屈膝角以及髌骨相对于股骨和胫骨的前-后和近-远端平移角度。膝关节屈曲时，膝盖骨相对于股骨和胫骨呈弧形平移。在屈曲早期，上点和质心点向前平移，然后髌骨相对于股骨向后平移。在整个屈曲过程中，膝盖骨的三个点都相对于胫骨向后平移。膝关节屈曲0度至20度和140度至160度时，平均有4毫米和3毫米的髌骨近端相对于胫骨平移。生理矢状面的运动学，包括膝盖骨的屈曲角度和相对于股骨和胫骨的平移，在每个受试者中都显示出大致相似的模式。在负重活动下测量动态放射学图像可能会增加识别膝盖骨病理情况的机会。
Lateral radiographic views can be easily taken and have reveal considerable information about the patella. The purpose of this study was to obtain sagittal plane patellar kinematics data through the entire range of knee flexion under weight-bearing conditions.Patellar flexion angles relative to the femur and tibia and anterior-posterior and proximal-distal translations of the patella relative to the femur and tibia were measured from 0 to 165A degrees knee flexion in nine healthy knees using dynamic radiographic images.The patella flexed relative to the femur and tibia by two thirds times and one third times the knee flexion angle, respectively. The patella translated in an arc relative to the femur and tibia as the knee flexed. In early flexion, the superior and centroid points translated anteriorly and then the patella translated posteriorly relative to the femur. All three points of the patella translated posteriorly relative to the tibia during a full range of flexion. An average of four and three millimetres proximal patellar translation relative to the tibia was demonstrated from 0 to 20A degrees and 140 to 160A degrees knee flexion, respectively.Physiological sagittal plane patellar kinematics, including patellar flexion angles and translations relative to the femur and tibia, showed generally similar patterns for each subject. Measurements of dynamic radiographic images under weight-bearing activities may enhance the opportunity to identify patellar pathological conditions.