When I was 18 I went for a long run with a heavy backpack and developed extreme tendonitis on the sides of my knees. I could barely walk without excruciating pa

When I was 18 I went for a long run with a heavy backpack and developed extreme tendonitis on the sides of my knees. I could barely walk without excruciating pain. After three weeks of this suffering I got one round of PRP injections and was able to walk a week later. I made a full recovery within the month. Insane. There was no way it would have healed so fast without the injections based on the pain trajectory from the prior weeks.