I agree with LisaM, that it may very well be just weak muscles from lack of use for so long. But please don't push things too far - no pain, no gain DOESN"T work for TOSERS! Maybe start out walking the wall 3 times (high as you can, but don't push past discomfort to PAIN) in a.m., 3 times in p.m.
Also do plenty of nerve glides - ask your PT to show you. Your muscles may have been cut off from their power supply - the nerves - due to TOS - and the nerves will take a bit longer to wake up. About 6 wks out from surgery you will feel when the nerves start waking up - they will tingle, be angry, flare easily, etc. But that is all to the good - now you will have good power supply to those muscles.
Baby steps...you didn't get here overnight, you can't undo it overnight.
![Roll Eyes (Sarcastic)](images/smilies/rolleyes.gif)
But if you aren't happy with your progress or your PT in 4-6 weeks or so, can't see you've made any ground, may want to look for a new PT, there are few who really understand rehabbing from TOS surgery.
Best wishes,
beth