We have a pair of menisci: medial and lateral menisci. Meniscus is a crescent-shaped fibrocartilage. It shares load and acts as cushion to absorb shock across the joint. It also helps reduce friction between thighbone and shinbone.
Meniscal tear is common among sport players and may occur during activities of daily living. It can be divided into simple and complex. Simple tear can be longitudinal, transverse, horizontal, oblique and flap. Complex tear is the combination of various simple tear patterns. Simple tear is often results from acute injury and complex tear is almost always accompanied with degeneration.