@lilianna I was diagnosed with TOS by a thoracic vascular surgeon and a neurologist. Even with that, there was an orthopedic doctor looking at my shoulder who doubted this and told me it was rare. They feel your pulse in your wrist and move your arm into different positions to see if the pulse diminishes. They did Doppler studies in different positions. That was also confirmed at Mayo and they had tiny blood pressure cuffs on my fingers while moving my arm in overhead positions, Per my local neurologist, they don’t spend much time on this in med schools. It’s a complex issue and can have several variations of where nerves and blood vessels get compressed.

The best PT I have had for TOS is myofascial release to get tight tissue and fascia unstuck. Strengthening exercises usually made it worse. There is a lot in our discussion about myofascial release if you search for that. There is a provider search at mfrtherapists.com.

I also do regular home stretching and laying on my back on a foam roller with outstretched arms and my PT has taught me ways to self treat with laying on balls, etc to use my body weight to stretch the chest muscles.