Osgood–Schlatter Disease !
Osgood–Schlatter disease is a painful bump below the kneecap in growing teenagers, caused by the patellar tendon pulling on the shin bone.
Updated 2026-10-23
Structures involved
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Why it happens
What it is
Traction apophysitis of the tibial tubercle in growing adolescents from repeated pull of the patellar tendon.
Risk factors
- Growth spurt
- Sports with running and jumping
- Tight quadriceps
Symptoms and signs
- Pain and swelling at the tibial tubercle
- Pain with kneeling, running, or jumping
Diagnosis
- Clinical
- Age, activity, and tenderness at the tibial tubercle
Treatment
- Rehabilitation
- Activity modification, stretching, and strengthening. Most resolve when growth finishes.
Educational information, not medical advice. For any symptom, see a health professional.
Sources: Osgood-Schlatter Disease (StatPearls (NCBI Bookshelf), 2024).
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Representative model, for educational purposes only.
