Chronic Knee Pain in Active Adolescents Don't Forget the Uncommon Causes.

In brief Chronic knee pain among active brief adolescents may be caused by a wide spectrum of conditions that range from generally benign, self-limited disorders, such as Osgood-Schlatter disease, to malignant osteosarcoma. Benign disorders account for the majority of knee pain in the adolescent athlete, and most causes are readily diagnosed. However, recognizing and treating the less common-often more serious-causes of chronic knee pain may be a greater challenge.