Originally Posted by CloakNNNdagger
Microfracture surgery is only performed when joint bone is denuded of its cartilage coverage. The fibrous tissue substitute it creates is neither thick nor durable. It is typically a last ditch effort to preserve the function of the joint. If it done for a very small area, a player may just squeak through. If it is a loss of significant cartilage caused by previous injury/surgery, success rate is dismal.
In Williams case, I have no doubt that he suffered significant cartilage damage at his initially reported "tweaked knee." The arthroscopy then was performed to remove loose and damaged cartilage, exposing some underlying bare knee joint bone. He returned to play too soon thus further breaking off bits of damaged cartilage. During this surgery, further cleanup of cartilage, thus exposing more bone surface would have likely been performed prior to the microfracture drilling. Keep in mind that after joint bone denuding of cartilage and drilling into the bone, arthritis naturally quickly ensues. Not a terribly rosey picture for the future.
So a bit off topic but considering the pro football prognosis of microfracture surgery,
How far off are we from seeing NFL players with replacement joints???