Isolated congenital hypoplasia of the lateral meniscus: A rare case report without associated knee abnormalities

Congenital meniscal anomalies are uncommon, with most reported cases involving discoid morphology or abnormal horn attachments. Hypoplasia or agenesis of the meniscus is exceedingly rare and typically associated with other knee anomalies. We describe a rare case of isolated hypoplasia of the lateral meniscus in a young woman with no history of trauma or previous knee surgery. Clinical evaluation and imaging excluded other intra-articular pathologies. A conservative treatment plan was adopted, and surgical intervention was deferred due to the absence of mechanical symptoms or associated osteochondral lesions.