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It serves as a protective shield for the knee and plays an essential role in the biomechanics of leg movement. The patella is embedded within the tendon of the quadriceps muscle and acts as a fulcrum, enhancing the leverage of the quadriceps during leg extension.Its anterior surface is smooth, while the posterior side features cartilage that glides over the femur (thighbone) during movement. This bone helps stabilize the knee joint and allows for efficient force transmission, particularly during activities like walking, running, and jumping.