Discoid meniscus with displaced flap tears

Discussion:

At first glance, this tear seems to be a bucket-handle tear although further interrogation of the tear shows that there are two regions of meniscal tissue in the central joint, and the more lateral of these two is in continuation with the anterior and posterior horns. Review of the prior MRI clearly shows a discoid meniscus. The morphology of the current tear is complex with the central portion torn and flipped both central and peripherally, a bit like a drum that has burst open centrally leaving a rim of tissue intact peripherally. 

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