Sydney Orthopaedic Research Institute, Level 1, The Gallery 445 Victoria Avenue, Chatswood, NSW, 2067, Australia.
Knee Surg Sports Traumatol Arthrosc. 2013 Feb;21(2):372-9. doi: 10.1007/s00167-012-1990-x. Epub 2012 Apr 5.
Despite increasing interest in the functional anatomy of the menisci, little information is available regarding the relationship between the tibial slope and the menisci. It was hypothesized that the meniscus would reduce the differences in slope between the medial and lateral compartments and would mitigate the effects of age and gender on the tibial slope.
MRI sagittal images from 101 patients were used in this study. The angle between a line tangent to the medial and lateral tibial bony slope and the proximal tibial anatomical axis was measured on sagittal MRI images (bony slope). The angle between the tangent line to the highest point of the anterior and posterior horn of the meniscus and the proximal tibial anatomical axis was also determined (soft tissue slope). The measurements were carried out twice by two observers. The influence of gender and age on these parameters was analysed.
Repeated measures analysis of variance showed good inter- and intra-observer reliability for both bony and soft tissue slope (ICC (0.87-0.93) and (0.91-0.97) for inter- and intra-observer reliability, respectively). In both compartments, the soft tissue significantly reduced the tibial slope towards the horizontal plane. In addition, the soft tissue slope was significantly more horizontal in the lateral compartment compared to the medial compartment (p < 0.01). These differences were not influenced by age or gender.
The menisci of the knee generate a more horizontal tibial slope when measured on MRI. The soft tissue slope is more horizontal in the lateral compartment of the knee compared to the medial compartment.
Diagnostic, Level III.
尽管人们对半月板的功能解剖学越来越感兴趣，但关于胫骨斜率与半月板之间的关系的信息却很少。本研究假设半月板会减少内侧和外侧间室之间斜率的差异，并减轻年龄和性别对胫骨斜率的影响。
本研究使用了 101 名患者的 MRI 矢状图像。在矢状 MRI 图像上测量了沿胫骨内侧和外侧骨斜率的切线与胫骨近端解剖轴之间的角度（骨斜率）。还确定了沿半月板前角和后角最高点与胫骨近端解剖轴的切线之间的角度（软组织斜率）。这些测量由两位观察者进行了两次。分析了性别和年龄对这些参数的影响。
重复测量方差分析显示，骨斜率和软组织斜率的观察者间和观察者内可靠性均良好（ICC（0.87-0.93）和（0.91-0.97））。在两个间室中，软组织均使胫骨斜率向水平面显著减小。此外，与内侧间室相比，外侧间室的软组织斜率明显更接近水平（p<0.01）。这些差异不受年龄或性别影响。
在 MRI 上测量时，膝关节的半月板会产生更接近水平的胫骨斜率。与内侧间室相比，膝关节外侧间室的软组织斜率更接近水平。
诊断，III 级。
