About posterior cruciate ligament - the true statement is:
Posterior cruciate ligament prevents posterior dislocation of tibia. Posterior displacement is prevented by anterolateral bundle during knee flexion and by the posteromedial bundle during knee extension.Ref: Human Anatomy, B D Chaurasia, 4th Edition, Volume 2, Chapter 12, Page 145; System Of Ohopaedics And Fractures, Apley, 9th Edition, Chapter 20, Page 584.
Attached to the lateral femoral condyle
Intrasynol
Prevents posterior dislocation of tibia
Relaxed in full flexion