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.
There is surrounding edema and fluid seen around the torn medial patellar retinaculum. There is note made of some thickening of the inferior aspect of the medial collateral ligaments, although the fibers do remain intact. The findings are suggestive of partial MCL sprain. The medial and lateral meniscus remain intact.