Competitive long-distance runner for 14 years. One day knee started hurting around the meniscus area all of a sudden and has hurt every time I run (every time only after a few miles first) for a year. My knee has also been inflammed the entire duration. I have stopped running for months on end and came back and it still hurt and my knee is still inflammed today with no running whatsoever. I was hit in the side by a car going about 18 mph approximately 2 weeks before my knee began to hurt. I got an MRI about 6 months after that and the doctors were largely incompetent but one said there was a minor meniscus tear and stage 1-2 cartilage damage. Can I run again? Will plasma/prolotherapy injections cure it? Surgery? I did PT for 6 weeks and it may have helped but it did not cure it and the pain came back.