We present here the third case report of bilateral discoid medial menisci w
ith associated bone changes. An 18-year-old man had bilateral medial tibial
plateau depression (cupping) accompanying medial discoid menisci documente
d by magnetic resonance imaging and confirmed by arthroscopy. The patient w
as treated successfully by excision of the torn central anomalous discoid p
ortion of the menisci using arthroscopic partial resection technique.