Have you identifies what is causing the patella tendonitis?
Until this is determined and addressed different symptoms will continue to show up.
You haven’t seen long tern relief because the cause isn’t being addressed.
Has anyone looked at your running technique?
The cause could be a deviation from proper running technique.
Pro Episode # 31 – User Request Friday – Live from The Games: Patellar Tendonitis
Episode 33: FGB Push Press Prep ; Hot Patellar Tendon: Hip /Calf/ Hamtsrings
Wonky, Beat Up Joint? Feed That Thing Good Mechanics and Some Slack
Episode 344: Compression Tack and Floss–The Knee
Episode 107: A Friend Calls With Knee”itis” Below the Patella
Episode 33: FGB Push Press Prep ; Hot Patellar Tendon: Hip /Calf/ Hamtsrings