OT...MRI on shoulder tomorrow *sigh*

Good morning everyone!  I hope you all are having a great weekend.  I'm getting ready to head outside in a bit and plant some flowers, trying to keep my mind clear. 

Tomorrow I'm having an MRI on my left shoulder.  Since surgery in October, I haven't been able to raise my left arm past my shoulder.  I have been in physical therapy since February and it's not getting any better, so they are sending me for an MRI tomorrow.  

Be honest with me people, what am I looking at here?  My doctor said he would send me for the MRI and then off to a specialist.  I'm so worried I'm looking at surgery, again.  I'm 8 months post-op and feel like I've just gotten back to normal.  I guess more than anything, I just needed to talk about it.  I'm trying to put up a happy front, but this has me really down in the dumps.  Thanks for listening :)

Howdy.  On two occasions in the past, separated by about one year, I found the same sort of inability to raise my arms to a horizontal position.  First it was my left arm, then a year later it was my right.  Both episodes came after falls in which I must have reflexively used my arms to cushion the impact.
Oddly enough, in both instances, I could lift the affected arm to vertical with my unaffected arm and then use it in that position for just about whatever I wanted to do (hair combing, shampoo, replacing light bulbs, and so forth).
In each case, the cause was a tear in one or more of the tendons making up the rotator cuff in the affected shoulder.  After consultation with a couple of doctors, I opted for arthroscopic surgeries to repair the tears.  In each case, the surgery began as an arthroscopic procedure but the surgeon opted to open me up after seeing the kinds of damages I was dealing with.
So now I have "zipper scars" on both shoulders.  But I also have full use of both arms.  The recuperation time was around six weeks after each operation, whi*****luded a variety of mechanical manipulations and physical therapy.  I wish I hadn't needed the surgeries, but I'm happy to have had them now that I have enjoyed a full recovery.
All of this took place about ten and eleven years ago.  It may well be that the state of the art for rotator cuff surgery is advanced enough these days that the likelihood of needing an open procedure is reduced.  I'm guessing the recuperation time for a straight arthroscopic procedure would be less arduous.
Good luck.

Thank you for your reply...I was afraid it might be that, but I'm not familiar with shoulder injuries.  The doctor thinks I've done some sort of tissue or muscle damage, but he's not sure how bad it is.  I'm hoping even if surgery is suggested, I can put it off for awhile, I'm just not up for something like that right now, does that make sense? 

I guess a good way to look at it would be that after that MRI I will have met my deductible, right?  LOL