doi:10.3969/j.issn.1674-490X.2023.05.002

Abstract

Abstract: Objective To investigate the diagnostic accuracy of 3.0 T MRI in the diagnosis of the medial and lateral meniscal posterior root tears. Methods 326 cases of knee joint confirmed by arthroscopy and with complete MRI data were collected. Under the premise of unknown arthroscopic results, the two physicians jointly evaluated the MRI images and analyzed the accuracy of posterior root tear of meniscus, including the sensitivity, specificity and accuracy of diagnosis. Results Fifty six of the 326 patients were diagnosed with meniscus posterior root tears by arthroscopy, including 41 cases of medial posterior root tears and 15 cases of lateral posterior root tears. The sensitivity, specificity and accuracy of 3.0 T MRI were 97.56%, 94.39% and 94.79%, respectively. The sensitivity, specificity and accuracy of 3.0 T MRI were 73.33%, 88.42% and 87.73%, respectively. The diagnostic sensitivity, specificity, and accuracy of posterior root tear of the medial meniscus are higher than those of the lateral meniscus(χ²=5.228,P=0.022;χ²=6.636,P=0.010;χ²=10.170,P=0.001). Conclusion 3.0 T MRI has high accuracy in the diagnosis of posterior root tears of meniscus.

Key words: menisci, root, magnetic resonance imaging, knee

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References

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