hello mate, yes.....ive got tendonitis in my shoulder and 'golfers elbow'. I started a thread under 'golfers elbow' it seems a few of us on the forum have similar injuries. I cannot throw until my 3 months of physio is finished.
I went to a private physio who diagnosed a problem ive had all last season in 2 mins flat...shoulder tendonitis and elbow were linked to each other. So im working on strengthening the shoulder muscles.
bit hard to explain the excercises, your physio may be you specific ones.....the main one I have is facing a wall you 'climb it like spiderman'.
I reach up and around as if reaching fore a can of beans.....the arm goes around in stead of straight up.
got 2 months left of that.
it's alright as Spiderman was my hero as a kid and in adulthood

hope this helps, I have a 3 month period before I can throw overarm again.....
im not medically qualified thou so cannot be sure this will help you or that you have the same excercises...it's similar injury but you will have to wait till you see a physio I would think.
good luck