Discoid menisci are thought to be heritable. However, few documented cases of this occurring within families exist. We present the case of siblings with lateral discoid menisci, documented by knee magnetic resonance imaging (MRI), reinforcing the case for the existence of familial discoid menisci. The children's father also reportedly had a discoid meniscus, but proof was unavailable due to his country of origin's poor record keeping. We put this into the context of other rare, reports of similar cases. Teaching Point: We present further case of discoid menisci occurring within families, a long-held belief with little concrete supporting evidence.
Keywords: Discoid meniscus; familial discoid meniscus; heritable discoid meniscus; meniscus anomaly.
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