The medial and lateral meniscus (plural: menisci) are crescent-shaped pieces of fibrocartilage that lie atop the tibia to cushion its contact with the femur and help stabilize the knee. Because these functions subject the menisci to high forces, the menisci are subject to tearing. Both acute traumatic events and simple degeneration can be responsible for tearing. Many patients with degenerative tears of the meniscus have no symptoms, though some have focal joint line pain or a sense of catching. The menisci themselves have very little intrinsic capacity for healing, and thus persistently symptomatic tears are treated with partial meniscectomy (removal), though tears near the capsule can be repaired.
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