Commonly used to refer to the region around the knee-cap (patella); more specifically, in anatomy, the largest joint in the human body, being the articulation between the femoral projections (condyles) and the tibial plateaux, and including the joint between the patella and the femur. It allows a wide range of movement, yet still retains a high degree of stability, because of the presence and arrangement of the ligaments of the joint. It contains the medial and lateral menisci (pieces of fibrous tissue between the femur and tibia), which help compensate for the differences in shape between the surfaces, aid in joint lubrication, and assist in weight-bearing.