Osgood–Schlatter disease

Osgood–Schlatter disease (OSD) is a condition that causes pain and swelling below the knee joint, where the patellar tendon attaches to the shinbone (tibia), a spot called the tibial tuberosity. There may also be inflammation of the patellar ligament, which stretches over the kneecap. It is one of the most common causes of knee pain in adolescents.

Causes

OSD is thought to be caused by small injuries due to repeated overuse before the knee area has finished growing. When activities such as running and jumping put strain on the knee, the quadriceps muscles of the thigh pull on the patellar ligament which in turn pulls on the tibial tuberosity. In some kids who are active in sports, these forces can cause the tibial tuberosity to become inflamed.

Symptoms

The main symptom is pain just below the kneecap. The pain usually worsens with exercise and is relieved by rest. Other symptoms may include swelling and tenderness at the tibial tuberosity, and tightness of the surrounding muscles.

Diagnosis

The diagnosis is usually made based on the symptoms and physical examination. X-rays are sometimes used to rule out other conditions.

Treatment

Treatment usually involves rest and reducing activity until the pain subsides. Over-the-counter pain relievers may also be used. In severe cases, a cast or brace may be needed.

Prognosis

The prognosis is generally good, with most individuals recovering after a period of rest.

See also

• Knee pain
• Patellar tendonitis
• Jumper's knee

Osgood–Schlatter disease Resources
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