Magnetic Resonance Imaging Evidence of Meniscal Extrusion in Medial Meniscus Posterior Root Tear

Choi, Chul-Jun; Choi, Yoon-Rak; Lee, Jae-Jeong; Choi, Christine

doi:10.1016/j.arthro.2010.05.004

Cited by 166 publications

(152 citation statements)

References 15 publications

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“…Conversely, knee OA may lead to degenerative meniscal damage that may accelerate the disease process [8]. Meniscal tears are known to be associated with structural progression (increased cartilage loss) of knee OA [9][10][11] and with meniscal extrusion [12][13][14], defined as a difference ≥3 mm between the external meniscal margin and that of the tibial plateau. Meniscal extrusion also is also common in knees without OA [15].…”

Section: Introductionmentioning

confidence: 99%

Relationship of 3D meniscal morphology and position with knee pain in subjects with knee osteoarthritis: a pilot study

et al. 2011

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Section: Introductionmentioning

confidence: 99%

Relationship of 3D meniscal morphology and position with knee pain in subjects with knee osteoarthritis: a pilot study

et al. 2011

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“…Root tears may or may not be associated with tears of the meniscus, and isolated root tears can occur with no tearing of the meniscus itself (3). When the meniscal root tears, the meniscus is no longer held within the joint, possibly resulting in meniscal extrusion (4,5).…”

Section: Subjectsmentioning

confidence: 99%

Medial Posterior Meniscal Root Tears Are Associated with Development or Worsening of Medial Tibiofemoral Cartilage Damage: The Multicenter Osteoarthritis Study

Guermazi

Hayashi²,

Jarraya³

et al. 2013

Radiology

109

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MPH Purpose:To assess the association of meniscal root tear with the development or worsening of tibiofemoral cartilage damage. Materials and Methods:Institutional review board approval and written informed consent from all subjects were obtained. A total of 596 knees with radiographically depicted osteoarthritis were randomly selected from the Multicenter Osteoarthritis study cohort. Cartilage damage was semiquantitatively assessed by using the Whole-Organ Magnetic Resonance Imaging Score (WORMS) system (grades 0-6). Subjects were separated into three groups: root tear only, meniscal tear without root tear, and neither meniscal nor root tear. A log-binomial regression model was used to calculate the relative risks for knees to develop incident or progressing cartilage damage in the root tear group and the meniscal tear group, with the no tear group serving as a reference. Results:In the medial tibiofemoral joint, there were 37 knees with isolated medial posterior root tear, 294 with meniscal tear without root tear, and 264 without meniscal or root tear. There were only two lateral posterior root tears, and no anterior root tears were found. Thus, the focus was on the medial posterior root tear. Conclusion:Isolated medial posterior meniscal root tear is associated with incident and progressive medial tibiofemoral cartilage loss.q RSNA, 2013

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“…Subjects were participants in the Multicenter Osteoarthritis (MOST) study, a prospective epidemiologic study of 3026 people aged 50-79 years (overall mean age, 62.5 years) with a goal of identifying risk factors for incident and progressive knee OA in a population either with or at high risk of developing considered by many authors as the most relevant factor associated with extrusion of the meniscus (25,(27)(28)(29), it has been demonstrated that several types of meniscal tears, including nonroot tears, are also related to meniscal extrusion (23,24,30). Magnetic resonance (MR) imaging has become established as the most important imaging modality in the assessment of knee pathologic findings, exhibiting excellent diagnostic performance in the detection of meniscal pathologic abnormalities (31,32).…”

Section: Study Design and Subjectsmentioning

confidence: 99%

Factors Associated with Meniscal Extrusion in Knees with or at Risk for Osteoarthritis: The Multicenter Osteoarthritis Study

Crema

Roemer²,

Felson³

et al. 2012

Radiology

181

172

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Purpose:To assess the associations of meniscal tears, knee malalignment, cartilage damage, knee effusion, and body mass index with meniscal extrusion. Materials and Methods:The Multicenter Osteoarthritis study is an observational study of individuals who have or are at risk for knee osteoarthritis (OA). The HIPAA-compliant protocol was approved by the institutional review boards of all participating centers, and written informed consent was obtained from all patients. All subjects with available baseline knee radiographs and magnetic resonance (MR) images were included. MR imaging assessment of meniscal morphologic characteristics, meniscal position, and cartilage morphologic characteristics with use of the Whole-Organ Magnetic Resonance Imaging Score system was performed by two musculoskeletal radiologists. Cross-sectional associations of severity of meniscal tears, knee malalignment, tibiofemoral cartilage damage, knee effusion, and body mass index with meniscal extrusion were assessed by using logistic regression, with multiadjustments when testing each predictor. Results:A total of 1527 subjects (2131 knees; 2116 medial and 2106 lateral menisci) were included. Medially, meniscal tears, varus malalignment, and cartilage damage were associated with meniscal extrusion, with odds ratios (ORs) of 6.3 (95% confidence interval [CI]: 5.0, 8.0), 1.3 (95% CI: 1.1, 1.7), and 1.8 (95% CI: 1.4, 2.2), respectively. Laterally, meniscal tears, valgus malalignment, and cartilage damage were associated with meniscal extrusion, with ORs of 10.3 (95% CI: 7.1, 14.9), 2.2 (95% CI: 1.5, 3.2), and 2.0 (95% CI: 1.3, 2.9), respectively. Conclusion:Meniscal tears are not the only factors associated with meniscal extrusion; other factors include knee malalignment and cartilage damage. Meniscal extrusion is probably an effect of the complex interactions among joint tissues and mechanical stresses involved in the OA process.q RSNA, 2012

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Magnetic Resonance Imaging Evidence of Meniscal Extrusion in Medial Meniscus Posterior Root Tear

Cited by 166 publications

References 15 publications

Relationship of 3D meniscal morphology and position with knee pain in subjects with knee osteoarthritis: a pilot study

Relationship of 3D meniscal morphology and position with knee pain in subjects with knee osteoarthritis: a pilot study

Medial Posterior Meniscal Root Tears Are Associated with Development or Worsening of Medial Tibiofemoral Cartilage Damage: The Multicenter Osteoarthritis Study

Factors Associated with Meniscal Extrusion in Knees with or at Risk for Osteoarthritis: The Multicenter Osteoarthritis Study

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