Appearance of the normal menisci on MRI

What is the appearance of the normal menisci on MRI?

The menisci are crescent-shaped structures within the joint at the medial and lateral aspects of the superior tibial articular surface. They are composed mainly of fibrocartilage and are low in signal intensity on all imaging sequences. On sagittal images, the menisci appear as bow tie–shaped structures. The posterior horn of the medial meniscus is larger than the anterior horn whereas the posterior and anterior horns of the lateral meniscus are similar in size.


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