Ive had numerous orthopedic surgeries but none involving shoulders.
Some good news: joint replacement replaces bone & boney surfaces/articulations and while it generally does not involve the removal of muscle, it does require moving muscles/tendons out of the way enough to access & remove the old joint and implant the new, so at best this will bring some collateral pain during EDIT - short term and maybe longer-term recovery.
A key to recovering from any joint surgery is beginning therapy as soon as practical * (see indent below) afterward - IE. when the site of surgery is still quite sore - and performing consistently (daily!) while progressing to its useful completion, which usually means doing all the therapy your surgeon recommends and then continuing on your own many months after you’ve finished the former. Instead of lip service, this therapy will literally require some actual no pain no gain 🤕
- the *third surgery on a knee was a 4 hour reconstructive procedure that, when i first awoke afterwards, i found the knee/leg in a special trough which would automatically flex & straighten every couple hours; this was the official beginning of therapy as recommended by that particular surgeon …. your surgeon’s recommendations may likely vary.
Some other good news : most of the muscular activity for lifting and dropping fingers & wrists occur below the elbow while lifting and dropping arms involves shoulder/chest/back muscles.
Best of luck to you!