12 months is a REALLY long time.
You need to give PT a good go, and keep, asking yourt PT how he/she thinks you are progressing. So long as you make progress, stick with it, but if you stop progressing, bring the appt forward. Also, I don't think you should be seeing different people each time. Perhaps you could ask for a particular person.
I recently had a scope. What did he do in yours? He surely found something ? You should be able to read your op notes(the PT let me read mine) to give you a bit more info.
LIke you, my OS said that after the scope the joint was really healthy, no problems, but here I am still with only 70 degrees flexionand a little short on extension. I guess they just don't know
Good luck smiley