Meniscal Cysts


Meniscal cysts are commonly reported in MRI scans and it is important to have an understanding as to whether these can be attributed to the index accident or are incidental findings.

Definition

A meniscal cyst is a focal collection of synovial fluid within or adjacent to the meniscus1 typically at the meniscocapsular junction. Most meniscal cysts are parameniscular

Etiology

A widely held view on the origin of parameniscal cysts is that they result from the extrusion of synovial fluid though an adjacent meniscal tear. The synovial fluid is forced though a tear and accumulates at the meniscocapsular junction forming a cyst. The fluid is then slowly resorbed leaving a thick jelly-like substance

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Incidence

Location

Traumatic or incidental