Lateral discoid meniscus in the pediatric knee: imaging features and tear patterns.

Lateral discoid meniscus is the most common meniscal congenital variant. A lateral discoid meniscus manifests with a spectrum of findings, including abnormalities in size and shape, disorganized collagen architecture, and/or hypermobility, predisposing the meniscus to early degeneration and tearing. The purpose of this narrative review is to discuss the anatomy of the lateral discoid meniscus and to highlight MRI findings that should be included in radiology reports to guide management.