My 13 year old son has Osgood Schlatter's. He plays competetive soccer and baseball. He's been taking the Oscon for 2 months now and, though I was skeptical, there has been some improvement. The condition is still very much present, but his pain levels have significantly decreased, and his recovery has been faster.In addition to the Oscon, he's stretching 3x's per day and is learning to rate and respect his pain levels. He tells his coaches when he needs to be pulled because of pain (he never would have dreamed of doing this before), and they've been good at allowing him to sit out activities in practice that will aggrivate his knees. The Oscon hasn't been a miracle cure... we still need to wait one to two years for the tendons to catch up, but I think it has been a valuable part of his OSD management.