MRI analysis of injury patterns and associated lesions of the medial meniscus posterior root in the knee joint
10.3969/j.issn.1002-1671.2024.11.022
- VernacularTitle:膝关节内侧半月板后根部损伤分型及相关病变的MRI分析
- Author:
Dongming LI
1
;
Haiyan WU
;
Ju ZENG
;
Hua LUO
;
Rongzhi LUO
;
Pengxu CHEN
Author Information
1. 四川省骨科医院医学影像科,四川 成都 610041
- Keywords:
knee joint;
medial meniscus posterior root;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2024;40(11):1852-1856
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the classification,concomitant injuries,and their correlations of medial meniscus posterior root(MMPR)injuries through a large-sample analysis,to enhance the comprehensive understanding of MMPR and related injuries.Methods A total of 240 patients with MMPR injuries were divided into 5 types.The distance of the torn end separation and the value of meniscus protrusion of MMPR were measured,and the grading of cartilage injury in the medial tibiofemoral compartment was recorded.The relationships between MMPR injuries and meniscus tear location,tear type,meniscus protrusion,and grading of cartilage injury were analyzed.Results The incidence of MMPR injuries was 2.82％,with females being 3.14 times more affected than males.Medial meniscus tears in type 1 and type 4 MMPR injuries were predominantly located in the posterior horn and posterior root,while there were no statistical differences among types 2,3,and 5.Type 1 MMPR injuries were predominantly oblique tears,types 2,3,and 5 were predominantly radial and complex tears,and type 4 was predominantly complex tears.The incidence of meniscus protrusion was sig-nificantly higher in types 3 and 4 MMPR injuries compared to other types.The value of medial meniscus protrusion was greater in type 4 MMPR than in type 3.In type 3 MMPR injuries,a larger torn end separation distance correlated with a greater value of medial meniscus protrusion.The severity of MMPR injuries correlated positively with the grading of cartilage injury in the medial tibiofemo-ral compartment.Conclusion Females are more prone to MMPR injuries than males.The classification of MMPR injuries correlates with the location and type of medial meniscus tears,as well as medial meniscus protrusion.There is a positive correlation between the torn end separation distance and the value of meniscus protrusion in MMPR injuries.The severity of MMPR injuries correlates with the degree of cartilage injury in the medial tibiofemoral compartment.
