Meniscal tear - longitudinal

Case contributed by A.Prof Frank Gaillard

See below

Case Discussion

This sagittal proton-density weighted, fat-saturated image of the right knee shows linear high signal (click image for arrow) in the posterior horn of the lateral meniscus. The high signal extends to the articular surface, consistent with a longitudinal meniscal tear. There is some high signal in the anterior horn which probably extends to the articular surface and may represent extension of the tear anteriorly.

A longitudinal tear is a vertical tear around the long axis of the meniscus. Other types of vertical tear include flap tears and radial tears. A longitudinal tear usually begins in the posterior horn and is typically peripherally located. Isolated anterior horn longitudinal tears are rare. The typical MRI finding is high signal on short TE sequences which extends to the articular surface (either inferior or superior). If fluid extends into the tear there will also be high signal on T2-weighted sequences.

Image contributed by: Dr Laughlin Dawes 

PlayAdd to Share

Case information

rID: 7672
Published: 18th Nov 2009
Last edited: 1st Sep 2015
Tag: knee
Inclusion in quiz mode: Included

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.