Sun Hui, Luo Cong-Feng, Shi Hui-Peng, Yang Guang, Zhong Biao, Zhang Chang-Qing, Zeng Bing-Fang
Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, 600 YiShan Road, Shanghai 200233, China.
Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital, Shanghai Jiaotong University, 600 YiShan Road, Shanghai 200233, China.
Knee. 2014 Mar;21(2):567-72. doi: 10.1016/j.knee.2012.10.025. Epub 2013 Jan 3.
To measure and calculate the morphological parameters and determine the anatomical characteristics of the posterior surface of the proximal tibia in a healthy Chinese population.
A total of 150 volunteers with normal knees were enrolled. The parameters in the multi-slice spiral computed tomography (MSCT) three-dimensional (3-D) reconstruction images were measured and calculated by two independent qualified observers. The differences and correlation were investigated. The intraclass correlation coefficient (ICC) was used to assess inter-observer reliability.
The posterior margin of the tibial plateau is presented as two superior arc-shapes. The central angles of these arcs were 118°±14° (medial) and 106°±20° (lateral). The radii of these arcs both showed a skewed distribution. The median radii of the arcs were 22 mm in the medial and 20mm in the lateral. There were two significant angles present in the sagittal plane of the posterior cortex of the proximal tibia. The first angles were 39°±7° (medial) and 47°±7° (lateral). The second angles were 39°±4° (medial) and 41°±5° (lateral). Significant differences were observed in the central angles and the first angles but not in the second angles between the medial and lateral. There were no significant differences between different gender groups, and between left and right limbs. All of these parameters exhibited excellent to moderate ICC.
Due to the varying anatomic morphology between the postero-medial and postero-lateral surface of the proximal tibia, the internal fixation implants of these two parts should be designed differently.
测量并计算中国健康人群胫骨近端后表面的形态学参数，确定其解剖学特征。
纳入150名膝关节正常的志愿者。由两名独立的合格观察者测量并计算多层螺旋计算机断层扫描（MSCT）三维（3-D）重建图像中的参数。研究差异及相关性。采用组内相关系数（ICC）评估观察者间的可靠性。
胫骨平台后缘呈两个上弧形。这些弧的圆心角分别为118°±14°（内侧）和106°±20°（外侧）。这些弧的半径均呈偏态分布。弧的中位半径在内侧为22mm，在外侧为20mm。胫骨近端后皮质矢状面存在两个显著角度。第一个角度分别为39°±7°（内侧）和47°±7°（外侧）。第二个角度分别为39°±4°（内侧）和41°±5°（外侧）。内侧和外侧之间在圆心角和第一个角度上观察到显著差异，但在第二个角度上没有。不同性别组之间以及左右肢体之间没有显著差异。所有这些参数均表现出良好至中等的ICC。
由于胫骨近端后内侧和后外侧表面的解剖形态不同，这两个部位的内固定植入物应采用不同设计。
