Sever Disease
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Direct answer
Sever disease is a traction apophysitis of the calcaneal growth centre that causes activity-related heel pain in physically active children, typically aged about 8 to 13 years. The condition arises when repeated pull of the Achilles tendon irritates the calcaneal apophysis before it fuses. The classic bedside sign is pain on medial-lateral squeezing of the heel, and management is activity modification, because the condition resolves once the apophysis closes.
What you must remember
- Site: the calcaneal apophysis, the secondary ossification centre at the posterior heel into which the Achilles tendon inserts.
- Age group: physically active children, typically between about 8 and 13 years, during the growth spurt before the apophysis fuses.
- Mechanism: repetitive traction during running, jumping and sport, rather than a single traumatic event.
- Heel squeeze test: pain on compressing the calcaneus medially and laterally is the key bedside finding.
- Radiographs: often normal, or they show fragmentation or sclerosis of the apophysis, so the diagnosis rests on history and examination.
- Differentials: calcaneal stress fracture and Achilles tendinopathy, and osteomyelitis when fever or pain at rest is present.
- Management: relative rest from the offending activity, heel raises or cushioned footwear, calf stretching and simple analgesia.
- Prognosis: self-limiting, with symptoms settling once the apophysis fuses in adolescence.
A stepwise approach to heel pain in a young athlete
A 10-year-old footballer reports posterior heel pain that worsens after training and eases with rest. The approach is to confirm an apophyseal source, exclude more serious causes and then adjust activity.
- Take the history: note pain at the back of the heel that is aggravated by running and jumping and settles with rest, in a child at peak growth.
- Examine the heel: look for posterior tenderness over the calcaneus and perform the heel squeeze test, comparing with the other side.
- Assess the calf: a tight gastrocnemius and soleus increase traction on the apophysis, so measure ankle dorsiflexion with the knee both straight and bent.
- Exclude mimics: consider calcaneal stress fracture, Achilles tendinopathy and osteomyelitis, which brings fever, night pain or swelling.
- Image selectively: radiographs are often normal, and fragmentation supports the diagnosis but is not required in routine cases.
- Modify activity: reduce training temporarily, use heel cups or raises and stretch the calf, expecting resolution as growth completes.
Where the exam tries to catch you
Examiners test whether you can separate a self-limiting apophysitis from a serious heel lesion.
- Trap: ordering urgent MRI or planning surgery for every child with heel pain. Correct: Sever disease is self-limiting and managed conservatively, so imaging and surgery are reserved for atypical features.
- Trap: diagnosing osteomyelitis because the child has heel pain. Correct: osteomyelitis brings fever, systemic upset and pain at rest, whereas Sever disease is activity-related and eases with rest.
- Trap: treating a normal radiograph as proof that the heel is healthy. Correct: the diagnosis is clinical, so a normal film does not exclude Sever disease when the history and heel squeeze test fit.
Frequently asked questions
Which bedside test is classically used to diagnose Sever disease?
The heel squeeze test is the classic bedside test for Sever disease. Pain on compressing the calcaneus medially and laterally, in a child with activity-related heel pain, supports the diagnosis.
At what age does Sever disease usually occur?
Sever disease usually occurs in physically active children aged about 8 to 13 years. It reflects the growth period before the calcaneal apophysis fuses in adolescence.
How is Sever disease managed?
Sever disease is managed conservatively with activity modification, heel cups or raises, calf stretching and simple analgesia. Surgery has no role in routine cases, because the condition resolves once the apophysis fuses.
Does a normal radiograph exclude Sever disease?
A normal radiograph does not exclude Sever disease, because the diagnosis rests on the history and examination. Fragmentation or sclerosis of the calcaneal apophysis may be seen, but imaging is not needed for routine cases.
Which conditions must be excluded in a child with heel pain?
Calcaneal stress fracture, Achilles tendinopathy and osteomyelitis must be excluded in a child with heel pain. Fever, night pain or systemic upset make osteomyelitis more likely and call for urgent investigation.