Sinding-Larsen-Johansson disease is a condition that affects the growth plate of the knee joint in children and adolescents. It is characterized by pain and swelling at the lower end of the thigh bone (femur) near the knee joint. The condition is caused by repetitive stress on the growth plate, which can lead to inflammation and eventual damage to the growth plate. Treatment typically involves rest, physical therapy, and in some cases, surgery.

The most common symptom of Sinding-Larsen-Johansson disease is Pain and tenderness at the lower end of the thigh bone (tibia) near the knee joint. Other symptoms may include:

• Swelling and tenderness at the lower end of the thigh bone
• Pain when bending the knee
• Pain when straightening the knee
• Limping
• Weakness in the knee
• Difficulty running or jumping
• A clicking or popping sound when the knee is moved

Sinding-Larsen-Johansson disease is caused by repetitive microtrauma to the growth plate of the knee. This can be caused by activities such as running, jumping, and kicking, which can cause the growth plate to become inflamed and irritated. Other causes may include overuse of the knee joint, poor biomechanics, and inadequate stretching or warm-up before physical activity.

1. Rest: Resting the affected joint is the most important treatment for Sinding-Larsen-Johansson disease. This means avoiding activities that cause pain or discomfort.

2. Ice: Applying ice to the affected area can help reduce pain and swelling.

3. Physical therapy: Physical therapy can help strengthen the muscles around the affected joint and improve range of motion.

4. Medications: Nonsteroidal anti-inflammatory drugs (NSAIDs) can help reduce pain and inflammation.

5. Surgery: In some cases, surgery may be necessary to remove the damaged tissue and repair the joint.

1. Age: Sinding-Larsen-Johansson disease is most common in children and adolescents between the ages of 10 and 15.

2. Gender: Boys are more likely to develop Sinding-Larsen-Johansson disease than girls.

3. Activity: Participating in activities that involve running, jumping, and kicking can increase the risk of developing Sinding-Larsen-Johansson disease.

4. Overuse: Overuse of the knee joint can lead to Sinding-Larsen-Johansson disease.

5. Genetics: Some people may be genetically predisposed to developing Sinding-Larsen-Johansson disease.

There is no cure for Sinding-Larsen-Johansson disease, but medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroids can be used to reduce pain and inflammation. Physical therapy and bracing may also be recommended to help manage the symptoms.