Why won’t my patellar tendonitis go away?

I’ve been treating it for a while. I’ve heard thigh strength helps a lot, but my squat max is 275. If that’s not strong enough i don’t know what is. I always stretch and warm up well before any activity. I ice when it gets painful and wear bands around my leg under my patella (Cho-Pat strap-type thing). I rest it when I can and avoid jumping whenever I can. It’s been about a year and I’ve been dealing with it enough so that I can still be active, but I would rather I would not have to worry about it all the time.
it actually started when i got custom orthotics for pronation…should i maybe go back to using them?

This does not “go away” you have it and you always will. You can help the pain by getting custom fit orthotics or the strengthening of leg muscles (quadriceps and gluteal) is going to be helpful. As a last option, surgery may be the only solution, as formation of scar tissue may prevent the knee from healing completely; and removal of this tissue through arthroscopic measures may be the last resort.

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Wellgate for Women Gel-Comfort Knee Support, 1 Size $13.99 The Women’s Gel-Comfort Knee Support helps relieve kneecap pain and guide the patella in its natural groove. This is a one size, adjustable product designed to fit women who wear Size 2 through Size 18 pants. It helps relieve general knee pain and pain associated with tendinitis, ligament sprains, swelling and arthritis of the knee. Product features include contoured straps to control your level o…

Mueller Maximum Strength Knee Support The Mueller maximum strength knee support is lightweight and comfortable. It is designed to offer targeted compression without restricting movement. The upper and side compression tubes help reduce misalignment and improve patellar tracking. The breathable mesh fabric allows for a comfortable fit all day long….

Pro-Tec Athletics Knee Patellar Tendon Strap $16.99 The Tandem Sports Pro-Tec knee strap can help alleviate symptoms of tendonitis, chondromalacia, Iliotibial Band Syndrome, Osgood Schlatter’s disease, and other knee ailments….