I have a 20-year-old son who is a runner. This past December he had an injury in his hip which that is what they thought it was. Prior to that he had a stress fracture in his foot and then after recovering from that is when he had the pain in his hamstring and his butt area. He’s had an MRI on his hip. They said looks normal. He had another MRI recently on his lower back thinking maybe that’s what calling causing his pain. That came back normal. He has had physical therapy, dry needling, massages and he’s taking time off from running. When he starts back to running it begins to hurt he is able to do all kinds of cross training running in the water baking lifting and doesn’t have any pain but is soon as he starts running on land the pain comes back. He is only 20 years old he shouldn’t be having any pain. We have been to multiple doctors multiple orthopedic’s and they’re all telling him everything is fine but that can’t be true if he is in pain. I’m looking for any suggestions that anyone might have that has dealt with hamstring issues they keep telling him it’s just tendinitis. How long does it take to get over tendinitis? It’s been a year now and nothing has helped. My son loves to run distance and it has just been killing him that he cannot get back to doing the sport that he loves. Thank you.