The body looks at this as toxic and if it gets absorbed, the liver deals with it mostly as a toxin rather than a nutrient. Eating the chalk will put a large quantity of this material in your body and is not a good idea at all.
This operation can be done either through the same incision as the medial patellofemoral ligament reconstruction or through a larger incision around the knee. It allows the patella to sit more centrally within its groove and not tilt as the patella engages in the trochlear groove.
Posterior cruciate ligament. The posterior cruciate ligament (or PCL) is one of the four major ligaments of the knee. It connects the posterior intercondylar area of the tibia to the medial condyle of the femur. This configuration allows the PCL to resist forces pushing the tibia posteriorly relative to the femur.