Had TOS, Bi Lat for 35+ years. TOS is the nerves are trapped in the thoracic outlet. The nerve doesn't slip in this area. The nerve sticks and causes pain, muscle spasm, ect. The whole idea of rib resections and or scalenectomy is to unstick nerves. Now you heal, hopefully. Part of that healing is to form scar tissue. Which sometimes is as bad as what was in the thoracic outlet or T.O., to begin with. The nerves get tugged in two directions when they get stuck in the T.O., the tugging of the nerves down into arms, chest and upper back but also back to your spine. This pain is different but almost the same. It sometimes shows up as Cervical Radiculopathy or damaged nerve roots, google it ,for symptoms. This causes pain in shoulder blades, etc. looks like TOS, smells like TOS, must be TOS. Hang in there, the first 100 years are the hardest.

Later Mark J