The human body is highly adaptable, bony changes occur and are occuring all the time. The matter of getting movement back to 'normal' and optimizing that will entirely depend on a variety of factors. Will physiotherapy help for this? I believe yes, and the evidence appears to support this notion. Is it too late for you? No not at all, long term chronic or degenerative changes take years to manifest, and even then much can be done about them with effort, consistency, persistence, and sheer positive force of will.

Good luck