中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (22): 3567-3572.doi: 10.12307/2023.393

• 骨与关节图像与影像 bone and joint imaging • 上一篇    下一篇

MRI定量测量内侧半月板外凸值与内侧半月板损伤模式及软骨损伤的相关性

陈  昊,王  瑞,姜少伟,吴  磊   

  1. 安徽医科大学第一附属医院运动创伤与关节镜外科,安徽省合肥市   230022
  • 收稿日期:2022-06-02 接受日期:2022-07-14 出版日期:2023-08-08 发布日期:2022-11-02
  • 通讯作者: 王瑞,在读博士,副主任医师,安徽医科大学第一附属医院运动创伤与关节镜外科,安徽省合肥市 230022
  • 作者简介:陈昊,男,1996年生,安徽省六安市人,汉族,安徽医科大学在读硕士,医师,主要从事运动创伤与关节镜方面的研究。

Correlation of MRI quantitative measurement of medial meniscus extrusion and medial meniscus injury pattern with cartilage damage

Chen Hao, Wang Rui, Jiang Shaowei, Wu Lei   

  1. Department of Sports Trauma and Arthroscopic Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
  • Received:2022-06-02 Accepted:2022-07-14 Online:2023-08-08 Published:2022-11-02
  • Contact: Wang Rui, Doctoral candidate, Associate chief physician, Department of Sports Trauma and Arthroscopic Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China
  • About author:Chen Hao, Master candidate, Physician, Department of Sports Trauma and Arthroscopic Surgery, First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui Province, China

摘要:

文题释义:

内侧半月板损伤:其病因与机制有多种,如急性扭伤时内侧半月板在股骨髁与胫骨间受到旋转暴力而撕裂,或是关节不稳、慢性劳损、发育异常等。内侧半月板损伤在MRI影像上依据信号分为4级,损伤模式分为纵行撕裂、斜行撕裂、水平撕裂、放射状撕裂、桶柄状撕裂、后根部撕裂及复合型撕裂等。
内侧半月板外凸值:在MRI冠状位影像上可观察到内侧半月板边缘超出于胫骨平台边缘部分的宽度,在半月板损伤时尤为明显,其原因是半月板环向胶原纤维断裂,半月板丧失了抵抗应力的能力。

背景:膝关节内侧半月板在损伤时可在MR影像上观察到超出胫骨平台边缘的外凸,其外凸值的大小是否与内侧半月板损伤的模式相关、是否与膝关节内侧间室软骨损伤程度相关值得探讨。
目的:在MRI下量化测量内侧半月板外凸值,并分析其影响因素,以及外凸值大小与内侧半月板损伤模式、内侧间室的软骨损伤程度是否有相关性。
方法:选择117例因膝关节半月板后角损伤就诊于安徽医科大学第一附属医院,并接受了膝关节MRI扫描检查和膝关节镜半月板手术的患者。MRI测量每例患者的半月板外凸值,从病历中录入每例患者的体质量指数、是否因急性创伤就诊、关节镜下证实的半月板损伤模式和内侧间室的软骨损伤等级等信息,分析半月板外凸值大小与上述因素的相关性。
结果与结论:①病史中存在可明确回忆的急性创伤患者组31例(26.5%),无明确回忆的急性创伤患者组86例(73.5%),两组半月板外凸值比较差异有显著性意义(P=0.001);②低体质量指数组(体质量指数≤25 kg/m2) 56例(47.9%),高体质量指数组(体质量指数> 25 kg/m2) 61例(52.1%),两组半月板外凸值比较差异有显著性意义(P=0.008);③按照半月板损伤部位分为半月板后体部损伤组60例(51.2%)、后角损伤组37例(31.6%),后根断裂组20例(17.1%),各组间半月板外凸值比较差异有显著性意义(P=0.000);④按照关节镜下证实的损伤情况,将非内侧半月板后根断裂的患者分为半月板复合裂组(n=49)和非复合裂组(n=48),两组半月板外凸值比较差异有显著性意义(P=0.000);⑤半月板外凸值预测内侧间室中重度软骨损伤和内侧半月板后根断裂受试者工作特征曲线下面积分别为0.794和0.942;⑥提示半月板外凸值的大小与患者病程中有无急性创伤、患者体质量指数和患者内侧半月板损伤模式相关,且半月板外凸值对内侧半月板后根断裂有较好的预测价值。
https://orcid.org/0000-0003-1904-3353(陈昊) 
中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

关键词: 半月板外凸, 半月板撕裂, 软骨损伤, 关节镜, MRI

Abstract: BACKGROUND: The medial meniscus extrusion beyond the edge of the tibial plateau can be observed on MR images of the medial meniscus of the knee joint during injury. It is worth exploring whether the external protuberance is related to the mode of medial meniscus injury and the degree of medial interventricular cartilage injury of the knee joint.
OBJECTIVE: To quantitatively measure the extrusion of medial meniscus under magnetic resonance imaging, and to study the factors affecting the value of medial meniscus extrusion, and whether it is related to the injury mode of medial meniscus and the degree of cartilage injury in medial compartment. 
METHODS: In this study, 117 patients diagnosed as knee meniscus posterior horn injury by sports injury in First Affiliated Hospital of Anhui Medical University were selected. They underwent knee joint MRI scan and knee arthroscopic meniscus surgery. The meniscus extrusion value (medial meniscus extrusion) was measured under MRI in each patient. The body mass index of each patient, whether due to acute injury, the mode of meniscus injury confirmed by arthroscopy and the grade of cartilage injury in the medial compartment were recorded from the medical record, and the correlation between the meniscus extrusion value and the above-mentioned factors was analyzed.
RESULTS AND CONCLUSION: (1) There were 31 (26.5%) acute injury patients with definite recall, 86 (73.5%) acute injury patients with no clear recall; there was a significant difference in the meniscus extrusion value between the two groups (P=0.001). (2) There were 56 (47.9%) patients with low body mass index (body mass index ≤ 25 kg/m2) and 61 patients (52.1%) with high body mass index (body mass index > 25 kg/m2); there was a significant difference in the meniscus extrusion value between the two groups (P=0.008). (3) According to the site of meniscus injury, there were meniscus posterior body injury group (60 cases, 51.2%), posterior horn injury group (37 cases, 31.6%), and posterior root fracture group (20 cases, 17.1%); there was a significant difference in the meniscus extrusion value between the two groups (P=0.000). (4) According to the injury confirmed by arthroscopy, patients with non-medial meniscus posterior root rupture were divided into compound meniscus fracture group (n=49) and non-compound meniscus fracture group (n=48); there was a significant difference in the meniscus extrusion value between the two groups (P=0.000). (5) The areas under receiver operating characteristic curve of moderate and severe cartilage injury in medial compartment and medial meniscus posterior root tearing predicted by medial meniscus extrusion were 0.794 and 0.942, respectively. (6) It is indicated that the size of medial meniscus extrusion reflects the presence or absence of acute trauma in the patient's disease course, their body mass index, and pattern of medial meniscus injury. Medial meniscus extrusion has a good predictive value for medial meniscus posterior root rupture. 

Key words: meniscus extrusion, meniscus tear, cartilage injury, arthroscopy, magnetic resonance imaging

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