Final answer:
The anterior and posterior cruciate ligaments limit the anterior-posterior movement of the tibia and align the femoral and tibial condyles for knee stability.
Step-by-step explanation:
The ligaments that limit the anterior-posterior movement of the tibia and maintain the alignment of the femoral and tibial condyles are the anterior cruciate ligament and the posterior cruciate ligament. These intracapsular ligaments are essential for knee stability. The anterior cruciate ligament prevents hyperextension, while the posterior cruciate ligament prevents anterior sliding of the femur over the tibia when the knee is flexed and weight-bearing, such as when walking downhill.