Question

Describe the theoretical course of the patella during normal

tracking during flexion and extension of the knee.
Given the normal knee ROM need for running, what phase of the
patellar tracking is most

Answer 1

The patella moves in the trochlear groove of the femur during knee flexion and extension, with the key phase for running being the early stages of flexion for shock absorption and push-off preparation.

Step-by-step explanation:

The patellar tracking refers to the movement of the patella, or kneecap, as it slides over the femur (thigh bone) during knee flexion and extension. During normal tracking, the patella moves in a groove on the femur called the trochlear groove. When the knee extends, the patella moves upward and outward (laterally), and during flexion, it slides downward and inward (medially). This movement is guided by the shape of the trochlear groove and the surrounding soft tissues, including ligaments and tendons.

For activities such as running, the most critical phase of patellar tracking occurs during the early stages of flexion. This is when the knee is moving from a fully extended position to a flexed position, which is integral for absorbing impact as the foot lands and preparing for the push-off phase of running. Proper patellar tracking during this range of motion (normal knee ROM) is vital for efficient and pain-free movement. An abnormal patellar movement can lead to overuse injuries such as patellofemoral pain syndrome, commonly seen in runners.