<P> The PCL is located within the knee joint where it stabilizes the articulating bones, particularly the femur and the tibia, during movement . It originates from the lateral edge of the medial femoral condyle and the roof of the intercondyle notch then stretches, at a posterior and lateral angle, toward the posterior of the tibia just below its articular surface . </P> <P> Although each PCL is a unified unit, they are described as separate anterolateral and posteromedial sections based off where each section's attachment site and function . During knee joint movement, the PCL rotates such that the anterolateral section stretches in knee flexion but not in knee extension and the posteromedial bundle stretches in extension rather than flexion . </P> <P> The function of the PCL is to prevent the femur from sliding off the anterior edge of the tibia and to prevent the tibia from displacing posterior to the femur . The posterior cruciate ligament is located within the knee . Ligaments are sturdy bands of tissues that connect bones . Similar to the anterior cruciate ligament, the PCL connects the femur to the tibia . </P> <P> Common causes of injuries are direct blows to the flexed knee, such as the knee hitting the dashboard in a car accident or falling hard on the knee, both instances displacing the tibia posterior to the femur . </P>

What is the main function of the pcl in the knee
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