I think the best healing comes when you combine the highly skilled doctor (therapist), with a patient that willing to trust, follow directions, accept that there may be functional limitations, and tries his/her best to restore as much function as possible. Unfortunately, many times our mental state prevents us from being good patients and no matter what standards are in place, highly skilled doctors are always in short supply. Also, just like in physical injuries, there are a lot of confounding factors and co-morbidities that further degrade optimal healing.