Osgood-Schlatter Syndrome is a painful enlargement of the bump of the shin bone (tibia) just below the knee. Osgood Schlatter Syndrome - How to Manage Pain in the Growing Knee by Christian Andersen, MD. Osgood-Schlatter Exercise Instructions. More on Osgood-Schlatter Syndrome from the American Academy of Orthopedic Surgeons (AAOS)..