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Osgood-Schlatter disease and apophysitis in young athletes
Apophysitis is repeated traction stress on a growth centre where a strong tendon attaches; Osgood-Schlatter disease at the tibial tubercle is the classic example, and it settles on its own with the end of growth and conservative care.
Why it matters in the exam
The typical stem describes a child aged 10–15 who plays football or basketball and has pain at the front of the knee that worsens with running, jumping, stairs and kneeling, with a tender bump over the tibial tubercle. Diagnosis is clinical, and a radiograph is needed only when the picture is atypical: one-sided pain with marked swelling, pain at night or at rest, fever, weight loss or significant trauma. In these cases infection, a bone tumour or an avulsion fracture of the tibial tubercle must be excluded. Further questions ask you to recognise the same mechanism elsewhere: Sever disease at the heel in younger children, and Sinding-Larsen-Johansson disease at the lower pole of the patella. Treatment is essentially the same: adjusting load rather than stopping sport completely, ice, painkillers as needed and stretching and strengthening of the front and back thigh muscles or the calf. Full recovery may take 12–24 months, and the bony bump often remains after the pain has gone. A key factor in all forms of apophysitis is the growth spurt: bone lengthens faster than muscles and tendons, so tension at the attachment rises. This is why regular stretching is an important part of treatment and prevention, and why flare-ups are common during sudden increases in training load. In questions about counselling parents, reassure them that the condition is benign and does not harm growth, and give a clear plan of adapted activity and gradual return to training.
Key points
- Repeated traction stress on a growth centre in a young athlete.
- Osgood-Schlatter — tibial tubercle, age 10–15.
- Sever — heel, age 8–12; Sinding-Larsen-Johansson — lower pole of the patella.
- Clinical diagnosis; radiograph only with warning signs.
- Conservative care; recovery within 12–24 months.
Summary table
| Condition | Site and age | Finding and treatment |
|---|---|---|
| Osgood-Schlatter | Tibial tubercle, age 10–15 | Tender bump; load adjustment, ice and quadriceps stretching |
| Sinding-Larsen-Johansson | Lower pole of the patella, age 10–12 | Tenderness at the patellar tip; similar conservative care |
| Sever | Calcaneal apophysis, age 8–12 | Heel pain on side-to-side squeeze; calf stretching and heel raises |
| Tibial tubercle avulsion fracture | Adolescent during a jump | Sudden pain and inability to straighten the knee; radiograph and usually surgery |
| Residual ossicle | After growth ends | Persistent pain over the ossicle; surgical excision in selected cases |
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Sources
- Lovell and Winter's Pediatric Orthopaedics, 8th ed. (2020) — Sports Medicine in the Growing Child
- AAOS Comprehensive Orthopaedic Review, 3rd ed. (2019) — Pediatric Knee and Foot Disorders
Sources are given for further reading; the text is written afresh and not copied from them.
Reviewed by the Examqo AI Professor · 2026-11-06. The text may contain errors; when in doubt, check the source.