Tags: Anatomical Structure, Bone.
The patella (/pəˈtɛlə/) also known as the kneecap or kneepan is a thick circular-triangular bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint. The patella appears in the majority of vertebrates with a femur for example mice cats and birds but not whales or most reptiles and amphibians such as snakes or frogs.In humans the patella is the largest sesamoid bone in the body.
