What is the knee meniscus?
The meniscus is crescent-shaped tough, rubbery cartilage structure that is located in the knee joint between the femur (thighbone) and the tibia (shinbone). Each knee has two menisci, one lateral (on the outside) and one medial (on the inside). These structures act as shock absorbers between the tibia and femur while during locomotion (walking, running, sports), and help stabilize the joint. Both the tibia and femur bones have articular cartilage, the slippery gristle-like substance on the end of the bones. Intact articular cartilage allows the bones to glide relatively to another in a smooth, painless manner Meniscus cartilage damage can result in a loss of articular cartilage. , Articular cartilage loss can cause an arthritic bone-on-bone condition; joint affected by arthritis are often inflamed and painful. The wear and tear arthritis a that follows damage to the meniscus is also known as osteoarthritis. The goal of a meniscus transplantation is to replace the knee meniscus before the articular cartilage is damaged.