In reply to The sharp end:
I went through the whole thing myself. After failed all sorts of things for years, had the same surgery. Before the surgery I had peaked at F7c+, down to F7b in April 2013 and had to stop climbing completely. Sept 2013: surgery. Dec 2013: VERY light resistance in rehab. April 2014: F6a. July 2014: F7a. Continuing to build up and now I am close on redpoint for an F7b+ and one move off doing all the moves on two F7cs.
In sum
- do the rehab with total commitment and listen to your body
- stick to the plan and build up slowly and steadily.
The best thing for me is that I used to have chronic impingement in my right shoulder. Now they have trimmed the collarbone that is impossible and it has opened up a whole level of training I wasn't able to do before.
I still have significantly limited reach and range with my right arm but that is coming along too.