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Meniscal injuries are considered as the most common type of knee injury. Plain radiographs have only limited role in identification of soft tissue injuries. Advancement in arthroscopy and MRI have allowed for increased accuracy in diagnosing soft tissue injuries of the knee. Aim of the study was to correlate radiological and arthroscopic findings of meniscal injuries of knee. Material and Methods: Cross sectional study was conducted in 40 patients who underwent MR imaging and arthroscopy following injury to the knee. The findings of MRI were correlated with the arthroscopy findings to find out the sensitivity, specificity, positive and negative predictive values. Results: Out of 40 patients, 60% patients showed medial meniscal tears alone, 30% patients showed lateral meniscal tears alone and 10% patients showed both medial and lateral meniscal tears on MRI. Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for detecting medial meniscal tears was 96.15%, 85% 92.8%, and 91.4% respectively. In the detection of lateral meniscal tears the sensitivity, specificity, PPV and NPV were 88.2%, 95.6%, 93.7%, and 91.66% respectively. Detection of lateral meniscus anterior horn tears, lateral meniscus body tears, bucket handle tears and root tears showed a higher sensitivity and specificity. Conclusion: MRI has exclusive capability to assess the internal structure and the surface of the meniscus. It is more sensitive in detection of multiple meniscal tears that may be overlooked on arthroscopy. MRI should be considered in patients suspected to have meniscal injuries to prevent unwanted arthroscopies.

MRI with Arthroscopic Correlation in Meniscal Injuries of Knee