Anatomical Knee Variants in Discoid Lateral Meniscal Tears  

作　　者：Xu-Xu Chen Jian Li Tao Wang Yang Zhao Hui Kang 

机构地区：[1]Department of Sports Medicine, Hong-Hui Hospital, Xi'an Jiaotong University College of Medicine, Xi'an, Shaanxi 710054, China

出　　处：《Chinese Medical Journal》2017年第5期536-541,共6页中华医学杂志（英文版）

基　　金：This work was supportecl by the Grant from the China Postdoctoral Science Foundation （No. 2016M602846）.

摘　　要：Background： Discoid lateral meniscus was a common meniscal dysplasia and was predisposed to tear. There were some anatomical knee variants in patients with discoid lateral meniscus. The aim of this study was to analyze the relationship between anatomical knee variants and discoid lateral meniscal tears. Methods： There were totally 125 cases of discoid lateral meniscus enrolled in this study from February 2008 to December 2013. Eighty-seven patients who underwent arthroscopic surgery for right torn discoid lateral meniscus were enrolled in the tom group. An additional 38 patients who were incidentally identified as having intact discoid lateral menisci on magnetic resonance imaging （MRI） findings were included in the control group. All patients were evaluated for anatornical knee variants on plain radiographs± including lateral joint space distance, height of the lateral tibial spine, height of the fibular head, obliquity of the lateral tibial plateau, squaring of the lateral femoral condyle, cupping of the lateral tibial plateau, lateral femoral condylar notch, and condylar cutoffsign. The relationship between anatomical variants and meniscal tear was evaluated. These anatomical variants in cases with complete discoid meniscus were also compared with those in cases with incomplete discoid meniscus. Results： There were no significant differences between the two groups in lateral joint space distance （P = 0.528）, height of the lateral tibial spine （P = 0.927）, height of the fibular head （P = 0.684）, obliquity of the lateral tibial plateau （P = 0.672）, and the positive rates of squaring of the lateral femoral condyle （P 0.665）, cupping of the lateral tibial plateau （P = 0.239）, and lateral femoral condylar notch （P 0.624）. The condylar cutoffsign was significantly different between the two groups, with the prominence ratio in the torn group being smaller than that in the control group （0.74 ± 0.11 vs. 0.81 ± 0.04, P = 0.049）. With the decision value of the prominence ratiBackground： Discoid lateral meniscus was a common meniscal dysplasia and was predisposed to tear. There were some anatomical knee variants in patients with discoid lateral meniscus. The aim of this study was to analyze the relationship between anatomical knee variants and discoid lateral meniscal tears. Methods： There were totally 125 cases of discoid lateral meniscus enrolled in this study from February 2008 to December 2013. Eighty-seven patients who underwent arthroscopic surgery for right torn discoid lateral meniscus were enrolled in the tom group. An additional 38 patients who were incidentally identified as having intact discoid lateral menisci on magnetic resonance imaging （MRI） findings were included in the control group. All patients were evaluated for anatornical knee variants on plain radiographs± including lateral joint space distance, height of the lateral tibial spine, height of the fibular head, obliquity of the lateral tibial plateau, squaring of the lateral femoral condyle, cupping of the lateral tibial plateau, lateral femoral condylar notch, and condylar cutoffsign. The relationship between anatomical variants and meniscal tear was evaluated. These anatomical variants in cases with complete discoid meniscus were also compared with those in cases with incomplete discoid meniscus. Results： There were no significant differences between the two groups in lateral joint space distance （P = 0.528）, height of the lateral tibial spine （P = 0.927）, height of the fibular head （P = 0.684）, obliquity of the lateral tibial plateau （P = 0.672）, and the positive rates of squaring of the lateral femoral condyle （P 0.665）, cupping of the lateral tibial plateau （P = 0.239）, and lateral femoral condylar notch （P 0.624）. The condylar cutoffsign was significantly different between the two groups, with the prominence ratio in the torn group being smaller than that in the control group （0.74 ± 0.11 vs. 0.81 ± 0.04, P = 0.049）. With the decision value of the prominence rati

关 键 词：Anatomy Knee Joint Lateral Menisci RADIOGRAPHY 

分 类 号：R[医药卫生]