Name of the Condition

• Juvenile Osteochondrosis of Patella, Right Knee
• Also known as Sinding-Larsen-Johansson disease when specifically affecting the patella.

Summary

Juvenile osteochondrosis of the patella is a childhood condition affecting the growth region of the kneecap, where stress or injury leads to pain and inflammation. This disorder commonly affects active children and adolescents who participate in sports.

Causes

• Repetitive stress or chronic trauma to the knee during growth spurts.
• Overuse from activities involving jumping or running.
• Potential genetic predisposition affecting bone growth.

Risk Factors

• Age: Typically affects children and adolescents.
• Physical activity: High levels of sports participation.
• Gender: More common in boys.
• Rapid growth periods during puberty.

Symptoms

• Pain and tenderness around the front of the knee.
• Swelling or inflammation near the patella.
• Difficulty in movement or reduced flexibility.

Diagnosis

• Clinical examination assessing symptoms and activity history.
• Imaging tests like X-rays or MRI for visualizing knee structure.

Treatment Options

• Rest and reduced activity to alleviate stress on the knee.
• Physical therapy to strengthen muscles and improve flexibility.
• NSAIDs for pain and inflammation relief.
• In severe cases, immobilization using a brace.

Prognosis and Follow-Up

• Generally good with proper treatment, as children often outgrow the condition.
• Regular follow-up to monitor progress and adjust treatment as needed.

Complications

• If untreated, it can lead to chronic pain or long-term knee joint issues.
• Potential for growth abnormalities in rare cases.

Lifestyle & Prevention

• Modifying activities to reduce knee stress.
• Strengthening and stretching exercises to support knee function.
• Proper warm-up before sports and adequate rest periods.

When to Seek Professional Help

• Persistent knee pain not alleviated by rest.
• Swelling or pain that worsens over time.
• Difficulty in knee movement or bearing weight on the leg.

Additional Resources

• American Academy of Orthopaedic Surgeons (AAOS)
• Pediatric Orthopaedic Society of North America (POSNA)

Tips for Medical Coders

• Ensure the correct laterality is coded: right knee in this case.
• Verify the age and activity level of the patient to confirm juvenile diagnosis.
• Avoid confusion with other knee disorders by noting the specific ICD-10 code M92.41.