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Discoid meniscus

A discoid meniscus is a developmental anomaly - something that just happens in some people who are born with a meniscus more like a flat round disc than a C-shaped wedge.

There may be no symptoms, and cause a surgeon some confusion when he peers into the joint and sees this unusual structure. Quite often, though, discoid menisci may be symptomatic, the symptoms commonly beginning in childhood -

A discoid meniscus can tear like any other meniscus and cause locking and joint line pain.

Surgery for a symptomatic discoid meniscus usually involves trimming it to approximately the shape of a normal meniscus.

If MRI investigation reveals a discoid meniscus but it is not causing problems then the surgeon may decide not to do anything about it until or unless there is a problem.

 

Updated: 16 Apr, 2013
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