Wang Xiaotan, Jing Lizhong, Wang Xiaole, Li Zhen, Li Zhuang, Zhang Zhiwei, Yang Jiushan
The First Clinical Medical School, Shandong University of Traditional Chinese Medicine.
Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan.
Medicine (Baltimore). 2020 Nov 20;99(47):e23351. doi: 10.1097/MD.0000000000023351.
The aim of this study was to analyze the relationship between medial posterior tibial slope (MPTS) and medial meniscus slope (MMS) with the location of meniscal lesions. We hypothesize that meniscuses with greater MPTS and MMS are more likely to have lesions in posterior horn.A total of 292 patients underwent arthroscopic surgery between January 2014 to September 2019 due to knee osteoarthritis (OA) and meniscal lesions were reviewed. Based upon the location of meniscal tears, patients were categorized as group B (tears in posterior horn) and group A (other sites). MPTS and MMS were measured from magnetic resonance imaging (MRI) slices. Osteoarthritis grade was evaluated in anteroposterior radiographs by the criteria defined by Kellgeren and Lawrence. Demographic data, OA grade, MPTS, and MMS for the 2 groups were compared and analyzed.The group A had 29 (39%) male and 45 (61%) female subjects with a mean age of 57.07 ± 6.79 years. Group B consists of 74 (34%) male and 144 (66%) female subjects with a mean age of 58.90 ± 7.594 years. (P = .067 and P = .458 for age and sex, respectively). In group A, 31 knees (42%) were determined to be Kellgren-Lawrence grade one, 32 knees (43%) grade two, and 11 knees (15%) grade three. In group B, 86 knees (39%) were categorized in grade one, 85 knees (39%) in grade two, and 47 knees (26%) in grade three (P = .085). The mean MPTS was 5.06 ± 2.11 degree for group A and 6.15 ± 2.37 degree for group B (P = .001). The mean MMS for group A was lower than group B (1.38 ± 2.12 degree vs 3.14 ± 2.92 degree; P < .000)This study demonstrated that increased MPTS and MMS may be considered as the risk factors for medial meniscal posterior horn tears.
本研究的目的是分析胫骨后内侧斜率（MPTS）和内侧半月板斜率（MMS）与半月板损伤位置之间的关系。我们假设MPTS和MMS较大的半月板更有可能在后角出现损伤。对2014年1月至2019年9月期间因膝关节骨关节炎（OA）接受关节镜手术的292例患者进行回顾，这些患者均伴有半月板损伤。根据半月板撕裂的位置，将患者分为B组（后角撕裂）和A组（其他部位）。从磁共振成像（MRI）切片测量MPTS和MMS。通过Kellgeren和Lawrence定义的标准在前后位X线片上评估骨关节炎等级。对两组的人口统计学数据、OA等级、MPTS和MMS进行比较和分析。A组有29名（39%）男性和45名（61%）女性受试者，平均年龄为57.07±6.79岁。B组由74名（34%）男性和144名（66%）女性受试者组成，平均年龄为58.90±7.594岁。（年龄和性别P值分别为0.067和0.458）。在A组中，31个膝关节（42%）被判定为Kellgren-Lawrence一级，32个膝关节（43%）为二级，11个膝关节（15%）为三级。在B组中，86个膝关节（39%）被归类为一级，85个膝关节（39%）为二级，47个膝关节（26%）为三级（P=0.085）。A组的平均MPTS为5.06±2.11度，B组为6.15±2.37度（P=0.001）。A组的平均MMS低于B组（1.38±2.12度对3.14±2.92度；P<0.000）。本研究表明，MPTS和MMS增加可能被视为内侧半月板后角撕裂的危险因素。
