Fan Ning, Zheng Yong-Chen, Zang Lei, Yang Cheng-Gang, Yuan Shuo, Du Peng, Liu Yan-Mei, Zhao Qing, Wang Jin-Wei
Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.
Department of Orthopedics, Beijing Shunyi District Hospital, Beijing, China.
BMC Musculoskelet Disord. 2021 Jan 21;22(1):100. doi: 10.1186/s12891-021-03984-5.
Several studies on the relationship between morphological parameters and traumatic diseases of the knee have already been conducted. However, few studies focused on the association between knee morphology and posterior cruciate ligament (PCL) avulsion fracture in adults. The objective of this study was to evaluate the impact of knee morphology on PCL avulsion fracture.
76 patients (comprised 40 men and 36 women) with PCL avulsion fracture and 76 age- and sex-matched controls without PCL avulsion fracture were studied from 2012 to 2020. MRI measurements of the knee were acquired in the sagittal, coronal, and axial planes. The assessed measurements including intercondylar notch width index, coronal tibial slope, and medial/lateral posterior tibial slopes were compared between men and women, and between case and control groups respectively using independent sample t-tests. In addition, binary logistic regression analyses were used to identify independent risk factors of PCL avulsion fracture.
Except notch width index (coronal) (p = 0.003) in the case groups, there was no statistical difference in the assessed measurements including notch width index (axial), coronal tibial slope, medial posterior tibial slope, and lateral posterior tibial slope between men and women in the case and control groups (p > 0.05). When female patients were analyzed, the notch width index (coronal) was significantly smaller (p = 0.0004), the medial posterior tibial slope (p = 0.018) and the lateral posterior tibial slope (p = 0.033) were significantly higher in the case group. The binary logistic regression analysis showed that the notch width index (coronal) (B = -0.347, OR = 0.707, p = 0.003) was found to be an independent factor of PCL avulsion fracture. However, none of the assessed measurements was found to have a statistical difference between the case and control groups in men (p > 0.05).
Notch width index (coronal), medial posterior tibial slope, and lateral posterior tibial slope were found to affect PCL avulsion fracture in women, but no such measurements affected the PCL avulsion fracture in men. Furthermore, a smaller notch width index (coronal) in women was found to be a risk factor in PCL avulsion fracture.
已经开展了多项关于膝关节形态学参数与创伤性疾病之间关系的研究。然而，很少有研究关注成人膝关节形态与后交叉韧带（PCL）撕脱骨折之间的关联。本研究的目的是评估膝关节形态对PCL撕脱骨折的影响。
对2012年至2020年期间76例PCL撕脱骨折患者（包括40名男性和36名女性）以及76名年龄和性别匹配的无PCL撕脱骨折的对照者进行研究。在矢状面、冠状面和轴位面上获取膝关节的MRI测量数据。使用独立样本t检验分别比较男性和女性之间以及病例组和对照组之间的评估测量值，包括髁间切迹宽度指数、冠状胫骨斜率以及胫骨后内侧/外侧斜率。此外，采用二元逻辑回归分析来确定PCL撕脱骨折的独立危险因素。
除病例组中的冠状面切迹宽度指数（p = 0.003）外，病例组和对照组中男性和女性之间的评估测量值，包括轴位面切迹宽度指数、冠状胫骨斜率、胫骨后内侧斜率和胫骨后外侧斜率，均无统计学差异（p > 0.05）。对女性患者进行分析时，病例组的冠状面切迹宽度指数显著更小（p = 0.0004），胫骨后内侧斜率（p = 0.018）和胫骨后外侧斜率（p = 0.033）显著更高。二元逻辑回归分析显示，冠状面切迹宽度指数（B = -0.347，OR = 0.707, p = 0.003）是PCL撕脱骨折的一个独立因素。然而，在男性病例组和对照组之间，未发现任何评估测量值存在统计学差异（p > 0.05）。
发现冠状面切迹宽度指数、胫骨后内侧斜率和胫骨后外侧斜率会影响女性的PCL撕脱骨折，但这些测量值对男性的PCL撕脱骨折没有影响。此外，女性较小的冠状面切迹宽度指数是PCL撕脱骨折的一个危险因素。
