Flipped lateral meniscus

Case contributed by Dr Chris O'Donnell


Recent trauma with pain laterally and inability to fully extend. Periodic "locking"

Patient Data

Age: 65
Gender: Female

Detached peripheral capsular attachment of the posterior horn lateral meniscus (but still attached posteromedially to the tibia). The loose posterior horn has flipped anteriorly such that it now sits adjacent to the anterior horn (so-called double anterior horn or double delta signs). Note the there is now a gap or bare spot posteriorly where the posterior horn previously sat.

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Case information

rID: 33038
Published: 28th Dec 2014
Last edited: 15th Apr 2017
Inclusion in quiz mode: Included

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