After my injury, I saw a physio for something like 2 months. The purpose of the physio was to help heal the acute injury itself to a point where it was basically functional. In other words, she would massage the injury and give me homework exercises to help the injury heal proper and start rebuilding the muscle.
When the injury reaches a certain point of recovery, the physio is not much use. When there is no trauma so to speak. After that, you see a bio, and she is the one that makes sure everything is working together. In other words, the bio won't just look at your shoulder, but anything that connects to it. A bio looks at your functioning in the real world and whether you are likely to have problems later in life. They will also give you homework to do, to continue rebuilding it.
You don't even necessarily need an injury to see a bio. For instance, you could have an imbalance in your leg muscles or something that is causing you hip pain. A bio will look at the way you walk, sit, step etc etc and find out what is causing the hip pain, then suggest corrective action. It might not have been an injury that caused it in the first place, could just be movement patterns.
