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首页> 外文期刊>Journal of orthopaedic research >Comparison of kinematic analysis by mapping tibiofemoral contact with movement of the femoral condylar centres in healthy and anterior cruciate ligament injured knees.
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Comparison of kinematic analysis by mapping tibiofemoral contact with movement of the femoral condylar centres in healthy and anterior cruciate ligament injured knees.

机译：在健康和前交叉韧带受伤的膝盖中绘制胫股接触与股骨dy中心运动的运动学分析比较。

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摘要

Two methods of analysis of knee kinematics from magnetic resonance images (MRI) in vivo have been developed independently: mapping the tibiofemoral contact, and tracking the femoral condylar centre. These two methods are compared for the assessment of kinematics in the healthy and the anterior cruciate ligament injured knee. Sagittal images of both knees of 20 subjects with unilateral anterior cruciate ligament injury were analysed. The subjects had performed a supine leg press against a 150 N load. Images were generated at 15 degrees intervals from 0 degrees to 90 degrees knee flexion. The tibiofemoral contact, and the centre of the femoral condyle (defined by the flexion facet centre (FFC)), were measured from the posterior tibial cortex. The pattern of contact in the healthy knee showed the femoral roll back from 0 degrees to 30 degrees, then from 30 degrees to 90 degrees the medial condyle rolled back little, while the lateral condyle continued to roll back on the tibial plateau. The contact pattern was more posterior in the injured knee [Formula: see text], particularly in the lateral compartment. The medial FFC moved back very little during knee flexion, while the lateral FFC moved back throughout the flexion arc. The FFC was not significantly different in the injured knee [Formula: see text]. The contact and movement of the FFC both demonstrated kinematic events at the knee, such as longitudinal rotation. Both methods are relevant to design of total knee arthroplasty: movement of the FFC for consideration of axis alignment, and contact pattern for issues of interface wear and arthritic change in ligament injury.
机译：已经独立开发了两种从体内磁共振图像（MRI）进行膝关节运动学分析的方法：绘制胫骨股骨接触图和跟踪股骨dy中心。比较了这两种方法在健康和前交叉韧带受伤的膝盖中的运动学评估。分析了20名单侧前交叉韧带损伤的受试者的双膝矢状图像。受试者对150 N的负荷进行了仰卧腿部按压。从0度到90度膝盖屈曲以15度间隔生成图像。从胫骨后皮质测量胫股接触和股骨center中心（由屈曲面中心（FFC）定义）。健康膝盖的接触模式显示股骨从0度回滚到30度，然后内侧from从30度回滚到90度，而外侧con在胫骨平台上继续回滚。接触模式在受伤的膝盖中更向后[公式：参见文字]，尤其是在外侧车厢中。在膝关节屈曲过程中，内侧FFC很少向后移动，而外侧FFC在整个弯曲弧中都向后移动。受伤的膝盖上的FFC没有显着差异[公式：参见文本]。 FFC的接触和运动都表明了膝盖的运动学事件，例如纵向旋转。两种方法都与全膝关节置换术的设计有关：FFC的运动考虑了轴的对齐，接触方式针对了韧带损伤中界面磨损和关节炎变化的问题。

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