Osgood-Schlatter Disease

Summary

Osgood-Schlatter disease is a common cause of pain and swelling in the front of the knee in children and teenagers who are growing fast, especially those who play sports. The condition occurs when the tendon below the kneecap pulls on the shinbone irritating the growth plate (apophysis). This causes pain, swelling, and sometimes a bump just below the knee (Figure 1). Doctors usually figure it out by checking the knee and may use an X-ray to be sure. Most kids get better with rest, ice, and stretching exercises. Surgery is almost never needed. The pain usually goes away with time, and most kids can go back to playing sports without any long-term problems.

Introduction

Osgood-Schlatter disease is a condition that causes pain and swelling just below the kneecap (Figure 1), where the patellar tendon attaches to the shinbone (tibia). It usually happens during the growth spurts of adolescence, when bones, muscles, and tendons are growing quickly. This condition is common in active kids and teenagers, especially those who play sports that involve a lot of running, jumping, or quick direction changes, like soccer, basketball, and volleyball. The repeated pulling of the tendon on the growing bone causes irritation and a painful bump to form just below the knee.

How Doctors Diagnose Osgood-Schlatter Disease

To diagnose Osgood-Schlatter disease, a doctor will ask about the person’s symptoms and physical activity. They will ask about recent growth of the child as Osgood-Schlatter’s only occurs in growing patients with open growth plates where the tendon inserts. Doctors will examine the knee for swelling, tenderness, and pain during movement. Typically, there is pain and swelling at the front of the knee where the patellar tendon inserts. Pressing on the area just below the kneecap usually causes discomfort. In most cases, the diagnosis is based on the exam alone. However, the doctor may order an X-ray to rule out other problems or to see the growth plate where the tendon attaches to the shinbone. Other imaging tests, like an MRI or ultrasound, are rarely needed unless the symptoms are unusual or severe.

Treatment of Osgood-Schlatter Disease

Treatment for Osgood-Schlatter disease is almost always non-surgical and focuses on reducing pain and allowing the area to heal. This includes resting from activities that make the pain worse, using ice packs, and taking anti-inflammatory medications like ibuprofen if needed. Stretching and strengthening exercises, especially for the thigh muscles (quadriceps), can help take pressure off the knee. Some children may benefit from wearing a knee strap or brace during activity to relieve tension on the area. Most young athletes can return to sports once their symptoms improve, but they may need to take an extended break from sports during painful flare-ups.

When Is Surgery Needed?

Surgery is rarely needed for Osgood-Schlatter disease. It is usually only considered in older teens or adults who still have pain after the bones have finished growing. In rare cases, a small piece of bone may not heal properly and continue to cause pain. If this happens, surgery may be done to remove the painful bone fragment. However, for most young people, surgery is not necessary, and the condition improves with time and proper care.

What to Expect Long-Term

The long-term outlook for Osgood-Schlatter disease is very good. Most people recover fully as they finish growing, and the pain goes away on its own. Some may be left with a bump below the knee, but it usually doesn’t cause problems. A few people may have occasional pain with kneeling or jumping, but this is uncommon. With rest, rehabilitation, and a gradual return to activity, most teens can return to their favorite sports and stay active without long-term issues.

Edited by Stephen Pinney MD, July 31st 2025.