内侧半月板半脱位与后根部撕裂的相关性  

Relationship between medial meniscus subluxation and posterior root tear

作　　者：李达[1] 梁洁[1] 刘存兵[2] 孟凡莲[2] 王现亮[2] 

机构地区：[1]潍坊医学院医学影像学系,山东潍坊261053 [2]潍坊市人民医院影像科,山东潍坊261041

出　　处：《中国医学影像技术》2016年第3期433-436,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨膝关节内侧半月板半脱位对诊断后根部撕裂的价值。方法回顾性分析经关节镜证实的120例内侧半月板撕裂患者的MRI图像,将其中60例后根部撕裂患者作为后根部撕裂组,其他撕裂的60例作为对照组,于MRI图像上测量半月板突出长度,将半月板突出长度≥3mm定义为半月板半脱位,比较两组半月板半脱位的发生率。结果后根部撕裂组中,合并半月板半脱位者56例(56/60,93.33%),对照组中合并半月板半脱位者13例(13/60,21.67%),差异有统计学意义(χ2=60.15,P<0.01)。内侧半月板半脱位提示后根部撕裂的敏感度、特异度及阳性似然比分别为81.16%(56/69)、92.16%(47/51)及10.35。结论膝关节内侧半月板半脱位可用以提示后根部撕裂。Objective To explore the correlation between meniscal subluxation and posterior root tear of the medial meniscus.Methods A total of 120 patients who had undergone preoperative knee MRI diagnosed as medial meniscus tear were enrolled in this study,including 60 patients with posterior root tear of the medial meniscal（extrusion group）and other 60 patients with medial meniscus tear without root tear（control group）.The length of medial meniscus extrusion were measured on MRI.Meniscal extrusion ≥3mm was considered subluxation.The incidences of meniscal subluxation were compared between two groups.Results In extrusion group,56patients（56/60,93.33%）with meniscal subluxation were found,13patients（13/60,21.67%）with meniscal subluxation were found in control group,the difference was statistically significant（χ^2=60.15,P〈0.01）.The sensitivity,specificity and positive likelihood ratio with meniscal subluxation detecting posterior root tear were 81.16%（56/69）,92.16%（47/51）and 10.35.Conclusion The medial meniscal subluxation could be used to suggest posterior root tear.

关 键 词：磁共振成像 膝关节 内侧半月板 撕裂 半脱位 

分 类 号：R445.2[医药卫生—影像医学与核医学] R684[医药卫生—诊断学]