Posture and arm/hand positioning is crucial. I have seen the therapy folks go through following the operation and it sure did not look like much fun. Perhaps being more aware of your posture and even some strengthening exercises might help. Would be a good question for the doc. Most doctors here prefer to try alternatives prior to ripping you open. It helps some folks, not others but surely worth a try.
Hope you feel better soon, I know it must hurt like the dickens.
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"People who are unable to motivate themselves must be content with mediocrity." ~Andrew Carnegie~