Menisci are pieces of cartilage that are C-shaped and lie in the space between where two bones meet, otherwise known as the joint space between bones. The job of a meniscus is to provide protection and support for the surface of the joint and the ends of the bone. It also provides a cushioning effect between the two to encourage smoother movement.
The menisci of the knee are located between the upper femur bone and the lower tibia bones of the leg. This means that the menisci are crucial in protecting the joints and bone against high-shock activities such as walking, running and jumping – anything which means hard impact and can cause the joint to jolt or be affected.
Any tear in the menisci means a huge compromise of stability and movement and can cause a great deal of pain.