Comparative study of MRI and arthroscopy imaging in the diagnosis of meniscus injury of knee joint

Objective:To study the various features of MRI and arthroscopic findings of meniscus injury of knee and their diagnostic value.Methods:MR and arthroscopic imaging of 102 injured menisci were retrospectively analyzed.The meniscus injuries were classified into grade Ⅰ to Ⅲ according to the signal features of meniscus on MR imaging,then the MRI features were compared with arthroscopic imagings respectively.Results:On the basis of signal intensity changes on MRI,there were 34 cases of grade Ⅰ injury,27 grade Ⅱ and 41 grade Ⅲ.Taking the result with arthroscopy as standard for the meniscus tear, the sensitivity of MRI was 90%,the specificity was 91.9%,and the diagnostic accuracy was 91.2%.Conclusion:MRI has great value and clinical significance in diagnosing meniscus injury of the knee.