Good luck with your surgery. I had both knees replaced this year, and I did extensive PT before surgery. So I would say yes. That said, you don't want to hurt the shoulder or be in pain. I would arrange PT through your surgeon.

My recoveries were relatively fast and went well. Again, these are knees not shoulders. But PT before and after surgery are probably among the most important factors leading to success.

@tfarizona Hi, I had an LRSP end of 2018. I was working full time and doing my farm chores when I got home. My range of motion was not good. My muscles were torn and bone on bone. At the time I did not want to make matters, so for me, there was no extra PT till three weeks after surgery. I would check with your surgeon for their opinion.
Now I need an RRSP for my ROM is very poor and the pain comes and goes. My muscles are torn and so is my bicep. I would not want to do PT for fear I would make matter worse before surgery.
It probably depends on much damage has already been done. Not looking forward to another surgery but I would like to use two arms. KLH

Good evening @tfarizona. I read your post before my walk this evening and then spent some time thinking about it while swinging in a swing along the Mississippi. My shoulder surgery was a reverse meaning that what I call the "ball and socket" are switched. It was also my third surgery on that shoulder which means that I had been in considerable pain and discomfort for quite some time.

Here is what Mayo Clinic states about PT prior to shoulder replacement......"Mayo Clinic provides dedicated, individualized physical therapy sessions for all patients prior to surgery." I can attest to the purported individualization as I am currently in a patient unique PT program to prevent falling by increasing my strength and balance.

Is your surgery scheduled at Mayo Clinic?

May you be safe, protected, and free from inner and outer harm.
Chris