Hi ihtos,
Immediately you lose the ability to do things like pick up a child, a bag of groceries - anything you might do with your arms pressing towards each other. Remember isometrics? (us girls used to do this as teenegers hoping to increase cup size

) Pressing your palms against eachother activates your pecs. Anything like that or even using arms away from the body... these are the movements you lose.
But you know, I felt tearing in my sternum before the pec minor surgery.
The arm pulling/tearing feeling has only started happening in the last year (2 years postop). I believe this is progressive, after 2 years of trying to cope on my own (with no help lifting things) my muscle groups are over taxed.
I hope the one surgery you had will be enough to carry you thru to some better quality of life. Maybe repeated pec minor blocks will be all you need to beat this thing!!