It looks like he is claiming to have been diagnosed with bulging discs and stress fractures in 2001, and has had pain since. The bulging discs are clinically irrelevant, but if he had stress fractures that he developed while training and playing AFL and has ongoing pain, he would be entitled to compensation, but I would’ve thought there would be an AFL way of handling that.
I’m not quite sure how the epidural injections come into his claim unless he is trying to argue that he was given the injections to allow him to keep playing when he should’ve been advised to rest and allow the fractures to heal, and he now has chronic pain due to the way it was managed. If this is the case, and he can prove it, then he probably stands a good chance of winning and I would expect some kind of settlement to be reached.