Meniscal cysts of the knee are common and well evaluated by magnetic resona
nce (MR) imaging, a method that also reveals the frequently associated meni
scal tear. Diagnosis of meniscal cysts with routine radiography is difficul
t, although bone erosions are reported as a very rare manifestation of such
cysts. Our retrospective study describes seven patients in whom meniscal c
ysts were associated with adjacent erosion of bone. (C) Elsevier Science In
c., 1999.