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Print. The menisci-the medial meniscus and lateral meniscus-are crescent-shaped bands of thick, rubbery cartilage attached to the shinbone (tibia). They act as shock absorbers and stabilize the knee. The medial meniscus is on the inner side of the knee joint. The lateral meniscus is on the outside of the knee. Meniscus tears can vary widely in size and severity. A meniscus can be split in half, ripped around its circumference in the shape of a C or left hanging by a thread to the knee joint.
Meniscal cartilage is the smooth, tough, rubbery, half-moon-shaped tissue that lines your knee joint. It helps the knee bones glide easily over each other, absorbs shock and acts to stabilize the joint. The knee joint contains an inner (or medial) meniscus and an outer (or lateral) meniscus (Figure 1). 1  The medial meniscus is torn much more often than the lateral meniscus.  There are many shapes and sizes of meniscal tears and some cause more problems than others.