Knee Cap (Patella)
A small flat triangular bone in front of the knee.
Part of: Knee
About the Patella
The knee joint is the junction of three bones: the femur (thigh bone or upper leg bone), the tibia (shin bone or larger bone of the lower leg), and the patella (kneecap).
The patella is 2 to 3 inches wide and 3 to 4 inches long. It sits over the other bones at the front of the knee joint and slides when the knee moves. It protects the knee and gives leverage to muscles…Read more about the Knee NIH – National Institute of Arthritis and Musculoskeletal and Skin Diseases