The term 'Patella Sites' refers to the location of the kneecaps, which are also known as patellas. The kneecaps are located on the front of the knee joint and are made up of a thick, fibrous tissue that helps protect the knee joint from damage. They are connected to the thighbone (femur) and the shinbone (tibia) by ligaments and tendons. The kneecaps are important for providing stability and support when walking, running, and jumping.