Meniscal cysts causing bone erosion:: Retrospective analysis of seven cases

Meniscal cysts of the knee are common and well evaluated by magnetic resonance (MR) imaging, a method that also reveals the frequently associated meniscal tear. Diagnosis of meniscal cysts with routine radiography is difficult, although bone erosions are reported as a very rare manifestation of such cysts. Our retrospective study describes seven patients in whom meniscal cysts were associated with adjacent erosion of bone.