Discoid knee menisci in children

Five children were operated for discoid menisci. One of them had, in addition, an anomalous capsular attachment and an anomalous course of the popliteus tendon. Vascularisation at the free margin was a striking feature in the four discoid menisci of the primitive type. Limited or painful extension was common in these children. In four cases the diagnosis was confirmed arthrographically. Arthrography was carried out in two patients respectively four and sixteen years old, after operation. In both cases a small regenerated meniscus was found as is seen after meniscectomy in adults.