Final answer:
The anterior cruciate ligament and posterior cruciate ligament are the ligaments that limit the anterior-posterior movement of the femur and maintain the alignment of the femur and tibia.
Step-by-step explanation:
The ligaments that limit the anterior-posterior movement of the femur and maintain the alignment of the femur and tibia are the anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL). Both are classified as intracapsular ligaments of the knee. The ACL extends from the anterior, superior surface of the tibia to the inner aspect of the lateral condyle of the femur and resists hyperextension of the knee. The PCL extends from the posterior, superior surface of the tibia to the inner aspect of the medial condyle of the femur; it prevents anterior sliding of the femur, thus supporting the knee when it is flexed and weight-bearing.