Pain in the front of the knee is common young athletes. In pre-teens and very early teens, pain is often localized to a small area on the front of the shin, just below the knee. The tibial tubercle, a small bony bump, is the site of attachment for the patellar ligament. All the force of the quadriceps (the strongest muscle in the leg) is concentrated on this area. During this period of rapid development, the growth plate of the tubercle becomes irritated by the repeated pull of the quadriceps, especially during running and jumping. This is known as Osgood-Schlatter apophysitis.

Kids with Osgood-Schlatter will have pain specific to the bony prominence on the upper shin. Pain is worsened by jumping and climbing stairs. Pushing on the bump also increases the pain.

Rest and anti-inflammatory medications such as ibuprofen and naproxen are recommended. Ice can be applied to the area of the tibial tubercle after activities. The pain is usually not severe enough to require giving up sports, although a few athletes may need to take a several week break from vigorous activities. One can expect that pain will resolve within 6 to 24 months. Severe or persistent pain should prompt a visit to the doctor.