Originally Posted by LtL
VERY light band pullaparts are good but in my experience won't help a shoulder impingement. I would recommend using a broomstick for shoulder dislocations. Do lots of reps, up to around 50 and if you feel comfortable, gradually move your hands closer together. Got this from Dante of DC training fame. Works well for breaking down the inevitable scar tissue and keeping things loose and mobile.
I did some light pullaparts (3 sets of 10, thin purple band (12kg at max stretch)) and the shoulder mobility drill for 3x10 yesterday and it felt good!
Good idea about the broomstick disclocations too, I do 1-2 sets of 10 on my clean and press days for warmup, but have not thought about doing that high rep work. Will try it out.