I took a MRI and found out I have petellar tendinitis in my knee. My left knee is worst and with a reddish pink color and if pushed on, it turns white. I have constant pain no matter what I do. Sitting, driving, walking, going up and down the stairs. I ve had several Cortisone shots along with physical therapy to no avail. Knee Arthroscopy is now being looked at. It looks like I didn t tear or rupture, but I m curious to know with the failed attempts of non-surgical treatment and how bad my knee is now, could therapy or shots help if I tried again, or would surgery be the best bet?