Hate to disappoint you but if you read the links I posted you would understand how a droopy shoulder can cause tightness in the scalenes and cause TOS. Please read the material before replying as your reply might scare people away from beneficial information.

These are studies carried out by doctors in the field. So yes, droopy shoulder can and does cause TOS. Is it the sole cause? No. Of course not. Nothing is that black and white.

Thanks for your input but I do not agree with you. I have studied the neck, the nerves and vessels/arteries of the thoracic outlet. The roos test and many other tests are not even viable tests. Often times people fail these tests and have no symptoms.

I am not going to type why droopy shoulders can cause TOS because I already linked the scientific studies and info on it which you apparently did not read .