I have had 4 surgeries and 1 manipulation. I had lots of scar tissue too. Manipulation caused more scarring and stiffness. Knee was so swollen I couldn't work thru the pain. Different Dr and lots of steroid shots snd medication swelling went down. Was referred to a revision specialist who removed lots of scar tissue. Did not replace the apparatus. Big improvement. Got up to 110% bend. 6 mo. later he had to remove 12 hugh sutures that were showing under my skin. That freed up my knee even more. I found swimming "every" day or at least working my knee in the pool, just like at pt helped a lot. Also, in hot tub every day after the pool which really helps at my gutness center. Plus PT
Also, don't be afraid to take aleve etc when needed. I fought doing thay but dr says it really helps. He said 1 tylenol and 1 aleve, advil etc. This whole thing sucks. At least I can walk, sit in a chair, and function. Best of luck. Worst part was that my problem was misdiagnosed. Was never my knee. The revision specialist told
me it was an inflamed pes anserine bursae below my knee. Cortisone was the solution. Not surgery.