Bilateral discoid mensicus

Case contributed by Dr Bahman Rasuli

Presentation

Clicking sound and locking both knees.

Patient Data

Age: 20 years
Gender: Male
MRI

Right knee

The lateral meniscus has an abnormally wide body which is seen in more than 3 sagittal images.

MRI

Left knee

The lateral meniscus has an abnormally wide body which is seen in more than 3 sagittal images.

Case Discussion

Discoid menisci are those that have a body that is too wide, usually affecting the lateral meniscus. They are incidentally found in 3-5% of knee MRI examinations. 

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