China- Japan Friendship School of Clinical Medicine, Peking University, 100029, Beijing, China.
Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, 100029, Beijing, China.
BMC Musculoskelet Disord. 2021 Jan 20;22(1):95. doi: 10.1186/s12891-021-03979-2.
This study aimed to assess the radii of the distal and posterior articular surfaces of the medial femoral condyle in a Chinese population and provide detailed parameters of the knee joint for the future design of UKA components.
This study included 500 consecutive Chinese patients who underwent knee MRI from Jan 2019 to Jan 2020. The two most appropriate circles were used to reveal the distal and posterior joint surfaces in the sagittal plane of the MRI images. The radius of the circle representing the distal articular surface in the sagittal plane was measured as R1, and the radius of the posterior articular surface was measured as R2. The distance between the centers of the two rotation circles was recorded as d. An independent t test was used to compare the differences between men and women. The Pearson correlation coefficient was calculated to analyze the correlation between R1 and R2. SPSS v19.0 software was used for statistical analysis.
The average values of R1, R2, R1/R2 and d were calculated. Scatter plots were constructed to show the trend of changes in the radius of the distal and posterior articular surfaces of the femoral condyle. R1, R2 and d differed significantly between men and women (p < 0.05). Correlation analysis showed that R1 was positively correlated with R2 (r = 0.61, p < 0.05).
The data of the radii of the distal and posterior articular surfaces of the medial femoral condyle were provided. In the UKA design, the relationships between the radii of the distal and posterior articular surfaces should be taken into account.
本研究旨在评估中国人群内侧股骨髁远端和后关节面的半径，并为 UKA 组件的未来设计提供膝关节的详细参数。
本研究纳入了 2019 年 1 月至 2020 年 1 月期间接受膝关节 MRI 检查的 500 例连续中国患者。使用两个最合适的圆来揭示 MRI 图像矢状位上的远端和后关节面。在矢状面测量代表远端关节面的圆的半径为 R1，测量后关节面的半径为 R2。记录两个旋转圆的中心之间的距离为 d。采用独立 t 检验比较男女之间的差异。计算 Pearson 相关系数分析 R1 和 R2 之间的相关性。采用 SPSS v19.0 软件进行统计分析。
计算了 R1、R2、R1/R2 和 d 的平均值。绘制散点图显示股骨髁远端和后关节面半径的变化趋势。R1、R2 和 d 在男女之间差异有统计学意义（p<0.05）。相关性分析表明 R1 与 R2 呈正相关（r=0.61，p<0.05）。
提供了内侧股骨髁远端和后关节面半径的数据。在 UKA 设计中，应考虑远端和后关节面半径之间的关系。
