Guo Shuxin, Guan Shikun, Huan Rui, Liu Ning
The Third Orthopedic Department, the First Affiliated Hospital of Harbin Medical University, Harbin Heilongjiang, 150001, P. R. China.
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi. 2025 Jan 15;39(1):32-39. doi: 10.7507/1002-1892.202410045.
To measure and analyze the relationships among the posterior tibial slope (PTS), meniscal slope (MS), and meniscus posterior horn thickness (MPHT) of the medial and lateral tibial plateau in healthy people and patients with anteromedial osteoarthritis (AMOA) in Heilongjiang province, so as to provide reference basis for appropriate tibial osteotomy and prosthesis placement angles in knee joint surgeries.
A retrospective collection of imaging data from knee joint MRI examinations conducted prior to AMOA for various reasons was performed. A total of 103 healthy individuals (healthy group) and 30 AMOA patients (AMOA group) were included. There was no significant difference in the gender composition ratio, side, and body mass index between the two groups ( >0.05); however, the comparison of ages between the two groups showed a significant difference ( <0.05). The collected DICOM format image data was imported into the RadiAnt DICOM Viewer software and measured the medial PTS (MPTS), lateral PTS (LPTS), medial MS (MMS), lateral MS (LMS), medial MPHT (MMPHT), and lateral MPHT (LMPHT) with standard methods. The differences of the above indexes between the two groups and between different genders and sides in the two groups were compared, and Pearson correlation analysis was carried out. At the same time, the measured data of healthy group were compared with the relevant literature reported in the past.
Compared to the healthy group, the AMOA group exhibited significantly smaller MPTS and LPTS, as well as significantly greater MMPHT and LMPHT, with significant differences ( <0.05). However, there was no significant difference in the MMS and LMS between the two groups ( >0.05). The differences in various indicators between genders and sides within the two groups were not significant ( >0.05). The correlation analysis and regression curves indicated that both MPTS and LPTS in the two groups were positively correlated with their respective ipsilateral MS and MPHT ( <0.05); as PTS increased, the rate of increase in MS and MPHT tend to plateau. Compared to previous related studies, the MPTS and LPTS measured in healthy group were comparable to those of the Turkish population, exhibiting smaller values than those reported in other studies, while MMS and LMS were relatively larger, and MMPHT and LMPHT were smaller.
In healthy people and AMOA patients in Heilongjiang province, PTS has great individual differences, but there is no significant individual difference in MS. MPHT can play a certain role in retroversion compensation, and its thickness increase may be used as one of the indicators to predict the progression of AMOA. The above factors should be taken into account when UKA is performed, and the posterior tilt angle of tibial osteotomy should be set reasonably after preoperative examination and evaluation.
测量并分析黑龙江省健康人群及前内侧骨关节炎（AMOA）患者胫股关节内外侧平台后倾角（PTS）、半月板倾角（MS）及半月板后角厚度（MPHT）之间的关系，为膝关节手术中合适的胫骨截骨及假体置入角度提供参考依据。
回顾性收集因各种原因在AMOA发病前进行的膝关节MRI检查的影像资料。共纳入103例健康个体（健康组）和30例AMOA患者（AMOA组）。两组间性别构成比、患侧及体重指数差异无统计学意义（P>0.05）；但两组年龄比较差异有统计学意义（P<0.05）。将收集的DICOM格式影像数据导入RadiAnt DICOM Viewer软件，采用标准方法测量内侧PTS（MPTS）、外侧PTS（LPTS）、内侧MS（MMS）、外侧MS（LMS）、内侧MPHT（MMPHT）及外侧MPHT（LMPHT）。比较两组间及两组内不同性别、不同侧别上述指标的差异，并进行Pearson相关性分析。同时，将健康组测量数据与既往相关文献报道进行比较。
与健康组相比，AMOA组MPTS和LPTS明显减小，MMPHT和LMPHT明显增大，差异有统计学意义（P<0.05）。两组间MMS和LMS差异无统计学意义（P>0.05）。两组内不同性别、不同侧别各指标差异无统计学意义（P>0.05）。相关性分析及回归曲线显示，两组MPTS和LPTS均与其同侧MS及MPHT呈正相关（P<0.05）；随着PTS增大，MS及MPHT的增大速率趋于平稳。与既往相关研究比较，健康组测量的MPTS和LPTS与土耳其人群相近，较其他研究报道值小，而MMS和LMS相对较大，MMPHT和LMPHT较小。
在黑龙江省健康人群及AMOA患者中，PTS个体差异较大，而MS个体差异无统计学意义。MPHT可起到一定的后倾代偿作用，其厚度增加可能作为预测AMOA进展的指标之一。行单髁置换术时应考虑上述因素，术前检查评估后合理设定胫骨截骨后倾角度。
