Related Experiment Video
Updated: Jun 18, 2026
Destabilization of the Medial Meniscus and Cartilage Scratch Murine Model of Accelerated Osteoarthritis
Published on: July 6, 2022
Age exerts differential effects on MRI misclassification for medial and lateral meniscal tears
Paula Viza Gomes1, Timothy Wee Shang Kouo2, Santita Ebangwese1
1Department of Orthopedic Surgery Duke University Hospital Durham North Carolina USA.
Purpose:
The influence of age on magnetic resonance imaging (MRI) misclassification patterns remains incompletely defined. The purpose of this study was to evaluate the association between patient age and MRI diagnostic performance by meniscus compartment, with a focus on error subtype.
Methods:
A retrospective diagnostic accuracy study was performed on 218 patients with intact anterior cruciate ligaments (ACLs) who underwent arthroscopic meniscal surgery between 2020 and 2024 with available preoperative MRI. The primary outcomes were compartment-specific MRI diagnostic errors, including false-positive and false-negative findings, as well as sensitivity and specificity. Univariable logistic regression modelled the association between age (per 10-year increase) and MRI misclassification outcomes, reported as odds ratios (ORs) with 95% confidence intervals (CIs).
Results:
A total of 218 knees were analysed for both medial and lateral menisci (mean age 46.4 ± 16.3 years; 50.5% male). MRI for detection of lateral meniscal tears demonstrated sensitivity of 0.44 (95% CI, 0.34-0.54) and specificity of 0.57 (95% CI, 0.49-0.66). MRI for detection of medial meniscal tears demonstrated higher sensitivity (0.75; 95% CI, 0.68-0.81) but lower specificity (0.27; 95% CI, 0.17-0.40). With increasing age, sensitivity of MRI for lateral tears declined while specificity increased; sensitivity for medial tears increased while specificity remained low. Each 10-year increase in age was associated with higher odds of lateral false negatives (OR 1.32; 95% CI, 0.99-1.80), although this did not reach statistical significance, and significantly lower odds of medial false negatives (OR 0.48; 95% CI, 0.36-0.62). Receiver operating characteristic analysis showed moderate discrimination for age (area under the curve 0.62-0.80), with thresholds near 46 years.
Conclusion:
Increasing age was associated with fewer missed medial meniscal tears but more missed lateral tears, with fewer false-positive lateral MRI findings. These patterns may reflect degenerative medial signal changes and lower prevalence of traumatic lateral tears in older patients. Incorporating age with clinical findings may improve compartment-specific MRI interpretation.
Level Of Evidence:
Level III.
Insights
Age influences magnetic resonance imaging (MRI) accuracy for meniscus tears. Older patients have fewer missed medial tears but more missed lateral tears, suggesting age adjustment improves MRI interpretation.
Area of Science:
- Orthopedic Surgery
- Radiology
- Medical Imaging Analysis
Background:
- Age-related changes can impact the accuracy of magnetic resonance imaging (MRI) in diagnosing meniscal tears.
- Understanding how patient age affects MRI misclassification patterns is crucial for improving diagnostic performance.
Purpose of the Study:
- To investigate the association between patient age and diagnostic accuracy of MRI for meniscal tears.
- To analyze age-related differences in MRI misclassification subtypes (false positives/negatives) by meniscus compartment.
Main Methods:
- Retrospective analysis of 218 patients with intact anterior cruciate ligaments (ACLs) and preoperative MRI before arthroscopic meniscal surgery.
- Evaluation of compartment-specific MRI diagnostic errors, sensitivity, and specificity.
- Univariable logistic regression to model the association between age and MRI misclassification outcomes.
Main Results:
- MRI demonstrated lower sensitivity and specificity for lateral meniscus tears compared to medial meniscus tears.
- Increasing age was associated with decreased sensitivity for lateral tears and increased specificity.
- Increasing age correlated with increased sensitivity and persistently low specificity for medial tears, with fewer false negatives.
Conclusions:
- Age significantly influences MRI diagnostic performance for meniscal tears, affecting error patterns differently between medial and lateral compartments.
- Findings suggest that age-related degenerative changes and tear prevalence influence MRI interpretation.
- Incorporating patient age into clinical assessments may enhance the accuracy of compartment-specific MRI interpretation for meniscal pathology.
