Flipped lateral meniscus

Case contributed by Bahman Rasuli
Diagnosis almost certain

Presentation

Painful right knee.

Patient Data

Age: 40 years
Gender: Male
mri

Mild joint effusion.

Complete peripheral vertical longitudinal tear of the posterior horn and body of the lateral meniscus with the displacement of the torn fragment anteriorly & medially within the intercondylar notch.

Synovial cyst measuring about 15 x 40 mm posterior to distal femur originated proximal to ACL femur origin.

Case Discussion

A flipped meniscus is a sub-type of bucket handle tear where a large portion of the meniscus flips to lie adjacent to the anterior horn leaving an empty space at the donor site.

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