Osgood-Schlatter disease is an overuse injury that occurs in the knee area of growing adolescents. It is caused by inflammation of the tendon below the kneecap (patellar tendon) where it attaches to the shinbone (tibia). Young adolescents who participate in certain sports, including soccer, gymnastics, basketball, and distance running, are most at risk for this disease.
- Knee pain
- Tenderness below the kneecap