[an osteopath that I’m seeing suggested the compression might actually be in the brachial plexus region where the chest muscle meets the shoulder. He is able to reproduce my symptoms just simply by applying pressure to my chest muscle or my shoulder muscle. He did make a comment that my collar bone is set back abnormally 2-3 inches than a normal person's which causes the compression when my arms are raised, yet I'm not sure how to confirm this.]

1- could that be the Pec minor? there is a procedure for that if it is the issue or part of it.

2- seems like x ray or MRI measurements could show that difference.

We do have a drs & PT listing in our sticky thread above the main TOS thread list.