The Geometry of the Trochlear Groove
The Geometry of the Trochlear Groove
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DOI：
10.1007/s11999-009-1156-4
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发表时间：
2010-03-01
影响因子：
4.2
通讯作者：
Cobb, Justin P.
中科院分区：
文献类型：
--
作者：
Iranpour, Farhad;Merican, Azhar M.;Cobb, Justin P.
背景在自然膝关节和人工膝关节中，踝关节沟的位置、形状和方向是决定功能和功能障碍的三个关键因素，但支配这三个特征的规则仍然难以捉摸。问题/目的-的目的是定义的三维几何形状的股骨trophilia和其关系的tibiofemoral joint的角度和distances.Methods四十健康患者的股骨的CT扫描进行了分析，使用定制设计的成像软件。调整后的股骨使用不同的轴，槽和trophilar轴的位置和方向进行了检查，相对于传统的轴femor.Results trophilar槽是圆形的，并定位在横向上的机械，解剖，和transcondylar轴的股骨，它不与任何这些轴对齐。我们已经将滑车轴定义为连接两个球体中心的线，这两个球体安装在滑车沟外侧和内侧的滑车表面上。当股骨对齐后，这个新的轴，trophilar槽出现更多的线性比其他方法的方向were used.Conclusions我们的研究表明，可靠的股骨方向的重要性时，报告的trophilar槽的形状。
Background In the natural and prosthetic knees the position, shape, and orientation of the trochlea groove are three of the key determinants of function and dysfunction, yet the rules governing these three features remain elusive. Questions/Purpose The aim was to define the three-dimensional geometry of the femoral trochlea and its relation to the tibiofemoral joint in terms of angles and distances.Methods Forty CT scans of femurs of healthy patients were analyzed using custom-designed imaging software. After aligning the femur using various axes, the locations and orientations of the groove and the trochlear axis were examined in relation to the conventional axes of the femur.Results The trochlear groove was circular and positioned laterally in relation to the mechanical, anatomic, and transcondylar axes of the femur; it was not aligned with any of these axes. We have defined the trochlear axis as a line joining the centers of two spheres fitted to the trochlear surfaces lateral and medial to the trochlear groove. When viewed after aligning the femur to this new axis, the trochlear groove appeared more linear than when other methods of orientation were used.Conclusions Our study shows the importance of reliable femoral orientation when reporting the shape of the trochlear groove.