It's a matter of consent. Consent is a legal contract between you and your health care professional. It means you give them permission to do certain things such as lay hands on you for therapy and surgeons to perform surgical procedures. For instance, if you signed a consent form that said you agree to have a knee replacement and 'any other necessary procedure', that last bit is referring to emergency procedures such as using screws and wires if a bone fractured during the surgery. It does NOT mean that if the surgeon spots (for instance) a lump on your thigh that he would be free to decide on a whim to remove it. That would be outside the terms of your consent and would constitute an assault. The same would apply if the surgeon decided you needed a manipulation. He would discuss it with you but could not perform it until you had agreed and signed a written consent and this you are not obliged to do. This is not an irrevocable contract and you can withdraw consent at any time and without giving a reason. In regard to PT, you are perfectly entitled to say what you will and won't consent to. So if you want to debar the PT from doing certain things, or all things, then you just need to say "I don't want that done" and that's the end of it. If they argue or attempt to bully you with threats of poor outcomes if you don't comply, angry surgeons and MUAs and so on, you are not required to debate the issue with them or prove your point of view above theirs, just remember that you have said no and leave it at that. You have the final say at all times.