Osgood Schlatter is a self-limiting knee condition which affects adolescent boys and girls that are involved in high volumes of sport.  High volumes of sporting activity can result in the powerful patellar tendon producing excessive traction forces on the developing and growing shin bone.  It occurs when high volumes of training and exercise coincide with a period of growth.

Commonly a small bony prominence becomes visible just below the knee cap.  The condition can be painful and may necessitate a break from sporting activity.  Occasionally it’s not painful and playing on is appropriate.  The condition resolves without any intervention and normally only requires diagnosis, reassurance and an appropriate rest period.  The small bony prominence below the knee cap is harmless but remains present into adulthood.