Typically, menisci are “C” or crescent shaped and semicircular. They are positioned between the femur and tibial and thus leave the central part of the top of the tibia (tibial plateau articular surface) uncovered as it meets with the femur. In some people the meniscal cartilage forms differently. The meniscus may be wider than usual and in some cases it is so wide that instead of resembling a crescent, it covers the entire plateau of the tibia and appears to be a full disc of tissue, hence the name discoid meniscus. This variant occurs more frequently on the outside (lateral) meniscus. It is usually without symptoms, but may be torn as with any meniscus.