What is the function of the patella?

The patella, commonly known as the kneecap, serves a crucial protective function for the knee joint. It acts as a shield, covering and safeguarding the front of the knee and the underlying structures, such as ligaments and tendons, from injury. Additionally, the patella plays a role in improving the leverage of the quadriceps muscle, which contributes to knee extension. By enhancing the mechanical efficiency of the knee, it allows for smoother movements and helps to distribute stress during activities like walking, running, and jumping. This protective role is critical in preventing damage from impact and wear, making the patella essential for knee joint integrity and function.