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KembaraXtra-Emergency and Acute Medicine - Osgood–Schlatter Disease
Description: Osgood–Schlatter disease is the most common cause of knee pain in children aged 10–15 years and represents a benign, self-limited extra-articular condition. It is characterized by pain, swelling, and tenderness over the tibial tuberosity at the insertion of the patellar tendon, just below the knee joint. Symptoms are activity related, worsening with exercise and improving with rest, and are commonly seen in physically active adolescents during periods of rapid growth.
Etiology: The most widely accepted mechanism involves repetitive traction and microfractures at the tibial tubercle apophysis caused by repeated stress from the patellar tendon. Activities that involve running, jumping, and sudden changes in direction increase strain on the extensor mechanism and precipitate symptoms.
Clinical features: Patients present with localized pain and swelling over the tibial tuberosity that is exacerbated by running, jumping, kneeling, or climbing stairs and relieved by rest. The condition is usually unilateral, although bilateral involvement occurs in approximately 20% of cases. Risk factors include age between 10 and 15 years, male sex, pubertal growth spurts, and participation in sports such as soccer, basketball, volleyball, and skating.
Physical examination: Examination reveals prominence, tenderness, and soft tissue swelling over the tibial tuberosity with pain reproduced by resisted knee extension. Quadriceps and hamstring tightness is common compared with the unaffected side. Mild erythema may be present, but the knee joint examination itself is otherwise normal, with no effusion or instability.
Evaluation: Diagnosis is primarily clinical based on history and examination. Imaging is not routinely required but may be obtained if the diagnosis is uncertain or to exclude other pathology. Plain knee radiographs may show fragmentation or irregular ossification of the tibial tuberosity, while ultrasound can demonstrate associated soft tissue changes.
Management: Treatment is conservative and focuses on symptom control and activity modification. Patients should rest from painful activities for approximately 6–8 weeks, particularly avoiding jumping and cutting sports. Ice application, stretching of the quadriceps and hamstrings, and use of analgesics such as ibuprofen or acetaminophen are recommended. An infrapatellar tendon strap or protective padding may reduce strain during activities. Corticosteroid injections should be avoided, and reassurance is essential as the condition resolves with skeletal maturity.
Disposition and follow-up: Admission is not required, and patients can be safely discharged home. Follow-up with a pediatrician or primary care provider in 2–3 weeks is advised to reassess symptoms and activity tolerance. Referral to pediatric orthopedics is rarely necessary and is reserved for patients
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