Knee pain due to osgood schlatters. what do you suggest for it?

Not at 45 years old: Osgood schlatters is no the cause of pain at 45 y/o. Look to another source of the pain in the knee area. Patella tendonitis or patella fomoral chondritis. See an orthopedist to evaluate the current problem.

Stretch, stretch and: Stretch. Specifically the quads and rectus femoris. Osgood-schlatter is a condition involving a portion of the tibial growth plate at the insertion of the patellar tendon. It resolves when the growth plates close. It tends to occur around the pubertal growth spurt and the best treatment is stretching multiple times a day, with a good mix of ice and nsaids as needed.