Double-Layered Lateral Meniscus

ABSTRACT

We report a case of double-layered lateral meniscus, where an accessory proximal hemimeniscus was overlying the body and posterior horn of the lateral meniscus. The double-layered meniscus arises proximal and parallel to the normal lateral meniscus with its periphery dissociated from the capsule and was significantly thinner and more mobile than its underlying true lateral meniscus. The accessory hemimeniscus was resected arthroscopically.