Posterior Cruciate and weight training

The cruciate ligaments are there to stabilize the kneejoint. The posterior cruciate ligament makes sure that your Tibia doesn't shift backwards under your femur. When you flex your knee there is partly a rotation and partly a sliding movement from your femurhead over your tibia plateau. The consequence is that Benchpresses and squats are very good exercises to stabilize your knee making your Quadricaeps stronger. But when your degree of flexion is too big you put extra stress on your PCL. So , you can do both exercises, but don't take them in full range of motion. You can also consider to do exercises such as leg-extensions, who pulls your tibia forward. When you choose for a functional revalidation, do exercises in a closed kinetic chain (benchpress-squats ..) Don't do legextensions with "anterior cruciate ligament" injuries.
groetjes ... zoutje
(sorry for my poor English)

I have a pretty bad, isolated pcl tear from a sport taekwondo tournament in '97. Any exercise that will strengthen the quads is aok. I don't do any machine exercises, and your client should definitely avoid leg extensions due to the shear force they hit the knee with. I can do full pistol squats on the bad leg with my heel elevated or holding a weight, but I was told to avoid playing basketball or any sport requiring cutting or pivoting. If your client was an elite level player before the injury, I would guess that the chances of her returing to 100% without surgery are pretty slim, in a sport that requires you to change directions moving backward. Her defense won't be the same with a pcl-deficient knee.