The degree of degenerative changes and medial meniscal extrusion of the knee progress with increasing severity of posterior root lesions of the medial meniscus in middle age: A cross-sectional study

IF 1.6 4区医学 Q3 ORTHOPEDICS

Knee Pub Date : 2025-04-18 DOI:10.1016/j.knee.2025.03.009

Young Mo Kim, Yong Bum Joo, Young Cheol Park, Min Jae Sung

{"title":"The degree of degenerative changes and medial meniscal extrusion of the knee progress with increasing severity of posterior root lesions of the medial meniscus in middle age: A cross-sectional study","authors":"Young Mo Kim, Yong Bum Joo, Young Cheol Park, Min Jae Sung","doi":"10.1016/j.knee.2025.03.009","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>The aim of this study was to evaluate the relationships between radiologic features and the severity of medial meniscal posterior root (MMPR) lesions.</div></div><div><h3>Methods</h3><div>Patients were classified into three groups: Group I, MMPR degeneration (<em>n</em> = 50); Group II, partial MMPR tear (MMPRT; <em>n</em> = 46); and Group III, complete MMPRT (<em>n</em> = 54). Forty-three patients without intra-articular pathologies formed a control group. Knee radiographs were assessed for mechanical femorotibial angle, Kellgren–Lawrence grade and joint space width of the medial compartment. MRIs were assessed for MMPR-related findings, including extent of medial meniscal extrusion (MME), insertional osseous change at the MMPR attachment, cartilage status, subchondral bone marrow lesions, effusion, and osteophytes of the medial compartment.</div></div><div><h3>Results</h3><div>Varus degree and proportions of Kellgren–Lawrence grade 2 and 3 were higher as the severity of MMPR lesions increased (<em>P</em> < 0.001, respectively). Joint space width decreased as the severity of the MMPR lesion increased (<em>P</em> < 0.001). On MRI, MME, ratio of pathologic MME (>3 mm), the International Cartilage Research Society grade of the medial compartment, the proportions of moderate and high effusion, and proportions of grade 2 and 3 osteophytes increased as the severity of MMPR lesions increased (<em>P</em> < 0.001, respectively). A higher proportion of intraosseous cysts was seen in Group I than in the other groups (<em>P</em> < 0.001).</div></div><div><h3>Conclusions</h3><div>The extent of MME and ratio of pathologic MME increased as the severity of MMPR lesions increased. Radiologic features reflecting osteoarthritis worsened as the severity of MMPR lesions increased. On MRI, MMPR degeneration is significantly associated with intraosseous cyst at the MMPR insertion site.</div></div>","PeriodicalId":56110,"journal":{"name":"Knee","volume":"55 ","pages":"Pages 43-54"},"PeriodicalIF":1.6000,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Knee","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0968016025000705","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ORTHOPEDICS","Score":null,"Total":0}

引用次数: 0

Abstract

Background

The aim of this study was to evaluate the relationships between radiologic features and the severity of medial meniscal posterior root (MMPR) lesions.

Methods

Patients were classified into three groups: Group I, MMPR degeneration (n = 50); Group II, partial MMPR tear (MMPRT; n = 46); and Group III, complete MMPRT (n = 54). Forty-three patients without intra-articular pathologies formed a control group. Knee radiographs were assessed for mechanical femorotibial angle, Kellgren–Lawrence grade and joint space width of the medial compartment. MRIs were assessed for MMPR-related findings, including extent of medial meniscal extrusion (MME), insertional osseous change at the MMPR attachment, cartilage status, subchondral bone marrow lesions, effusion, and osteophytes of the medial compartment.

Results

Varus degree and proportions of Kellgren–Lawrence grade 2 and 3 were higher as the severity of MMPR lesions increased (P < 0.001, respectively). Joint space width decreased as the severity of the MMPR lesion increased (P < 0.001). On MRI, MME, ratio of pathologic MME (>3 mm), the International Cartilage Research Society grade of the medial compartment, the proportions of moderate and high effusion, and proportions of grade 2 and 3 osteophytes increased as the severity of MMPR lesions increased (P < 0.001, respectively). A higher proportion of intraosseous cysts was seen in Group I than in the other groups (P < 0.001).

Conclusions

The extent of MME and ratio of pathologic MME increased as the severity of MMPR lesions increased. Radiologic features reflecting osteoarthritis worsened as the severity of MMPR lesions increased. On MRI, MMPR degeneration is significantly associated with intraosseous cyst at the MMPR insertion site.

查看原文本刊更多论文

随着中年中半月板后根病变严重程度的增加，膝关节退行性改变和内侧半月板挤压的程度进展：一项横断面研究

本研究的目的是评估放射学特征与内侧半月板后根（MMPR）病变严重程度之间的关系。方法将患者分为3组：I组，MMPR退行性变（n = 50）；II组，部分MMPR撕裂(MMPRT；n = 46)；III组为完成MMPRT （n = 54）。无关节内病变患者43例作为对照组。膝关节x线片评估机械股胫角、kelgren - lawrence分级和内侧室关节间隙宽度。mri评估了MMPR相关的发现，包括内侧半月板挤压（MME）的程度，MMPR附着处的插入性骨改变，软骨状态，软骨下骨髓病变，积液和内侧骨室骨赘。结果随着MMPR病变严重程度的增加，Kellgren-Lawrence 2级和3级内翻程度和比例更高(P <；分别为0.001)。关节间隙宽度随着MMPR病变严重程度的增加而减小(P <；0.001)。MRI、MME、病理性MME比例（3mm）、国际软骨研究学会分级、中度和高度积液比例、2级和3级骨赘比例随着MMPR病变严重程度的增加而增加(P <；分别为0.001)。I组骨内囊肿比例高于其他组(P <；0.001)。结论随着MMPR病变严重程度的增加，MME的范围和病理MME的比例增加。反映骨关节炎的放射学特征随着MMPR病变严重程度的增加而恶化。在MRI上，MMPR退变与MMPR插入部位的骨内囊肿显著相关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Knee 医学-外科

CiteScore

3.80

自引率

5.30%

发文量

171

审稿时长

6 months

期刊介绍： The Knee is an international journal publishing studies on the clinical treatment and fundamental biomechanical characteristics of this joint. The aim of the journal is to provide a vehicle relevant to surgeons, biomedical engineers, imaging specialists, materials scientists, rehabilitation personnel and all those with an interest in the knee. The topics covered include, but are not limited to: • Anatomy, physiology, morphology and biochemistry; • Biomechanical studies; • Advances in the development of prosthetic, orthotic and augmentation devices; • Imaging and diagnostic techniques; • Pathology; • Trauma; • Surgery; • Rehabilitation.