Osgood Schlatter

Osgood-Schlatter disease is one of the common causes of knee pain in active adolescent children who play sports. However, it is uncommon over the age of 16. Young teenagers, particularly boys, are the most commonly affected. It is more common in teenagers who play a lot of sport involving kicking, running or jumping. These kinds of sports cause repeated and vigorous use of the muscles on the front of the thigh (quadriceps). It can sometimes occur in children who are not sporty.

What causes it?

During activities that involve a lot of running, jumping and bending — such as football, basketball, volleyball and ballet — the thigh quadriceps pull on the tendon that connects the kneecap to the shinbone. This repeated stress can cause the tendon to pull away from the shinbone, resulting in the pain and swelling associated with Osgood-Schlatter disease. In some cases, your child’s body may try to close that gap with new bone growth, which can result in a bony lump at that spot.


  • knee or leg pain.
  • swelling, tenderness, or increased warmth under the knee and over the shinbone.
  • pain that gets worse with exercise or high-impact activities, such as running.
  • limping after physical activity.