Posterior Calcaneus Apophysitis

Last updated: February 8, 2026Reviewed date: February 8, 2026Reading time: 3 min read
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Article Summary

Posterior Calcaneal apophysitis, also known as Sever disease, is the painful inflammation of the apophysis of the calcaneus. It typically presents in active young children and adolescents, especially those who enjoy jumping and running sports. High plantar foot pressures are associated with Sever disease, although it is unclear whether they are a predisposing factor or a result of the condition. Gastrocnemius equinus may be a predisposing factor for...

Key Takeaways

  • This article explains Causes in simple medical language.
  • This article explains Differential Diagnosis in simple medical language.
  • This article explains Diagnosis in simple medical language.
  • This article explains Treatment in simple medical language.
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Definition

Posterior Calcaneal apophysitis, also known as Sever disease, is the painful of the apophysis of the . It typically presents in active young children and adolescents, especially those who enjoy jumping and running sports. High plantar foot pressures are associated with Sever disease, although it is unclear whether they are a predisposing factor or a result of the condition. Gastrocnemius equinus may be a predisposing factor for Sever disease.

General

  • Seen in skeletally immature athletes
  • Traction at the  insertion site correcting with the secondary ossification center
  • Occurs with growth spurts, increased activity, or repetitive running and jumping
  • Presents as heel secondary to overuse
  • Resolves with skeletal maturation and closure of apophysis

Causes

  • Repetitive and microtrauma
    • Caused by force of the Achilles which inserts at secondary ossification center
    • Results in irritation and potential partial avulsion of the calcaneal apophysis
  • Sports
    • Running and jumping sports
    • Basketball
    • Soccer
    • Gymnastics
  • Extrinsic
    • Long or year-round activities
    • Poorly fitting or worn-out footwear
    • Poor training mechanics
  • Intrinsic
    • Poor heel cord flexibility
    • pes cavus
    • pes planus
    • genu varum
    • forefoot varus

  • Fractures & Dislocations
    • Distal
    • Distal Fibular Fracture
    • Talus Fracture
    • Calcaneus Fracture
    • Subtalar
    • Ankle Fracture (& Dislocation)
    • Peroneal Subluxation
  • Muscle and Tendon Injuries
    • Peroneal Tendon Injuries
    • Achilles
    • Achilles Tendon Rupture
    • Posterior Tibial Tendon Dysfunction
    • Flexor Hallucis Longus
  • Injuries
    • Lateral Ankle
    • Medial Ankle Sprain
    • Syndesmotic Sprain
    • Ankle Instability
    • Intersection Foot
  • Bursopathies
    • Retrocalcaneal
  • Nerve Injuries
    • Peroneal Nerve Injury
    • Tarsal Tunnel Syndrome
  • Arthropathies
    • of the Ankle
    • Osteochondral Defect Talus
  • Pediatrics
    • Fifth Apophysitis (Iselin’s Disease)
    • Calcaneal Apophysitis (Sever’s Disease)
  • Other
    • Haglunds Deformity
    • Posterior Ankle Impingement Syndrome
    • Tarsi Syndrome

  • History
    • Children are typically 8 to 14 years old
    • Pain over the calcaneal apophysis/calcaneal insertion of Achilles tendon
    • Pain with activity or impact, worse on hard surfaces, wearing cleats
    • Resolution of pain with rest
    • Limping may be present
  • Physical Exam: Physical Exam Ankle
    • May have , , warmth
    • Tender over achilles tendon insertion
    • Pain with passive ankle dorsiflexion
    • Tight Achilles tendon and calf muscles
    • Pes planus or pronated forefoot may be present
  • Special Tests
    • Squeeze Test: Pain over the posterior calcaneus with compression)
    • Sever Sign: Increased pain at calcaneus with standing on tiptoes
  • diagnosis and imaging is not routinely required

Radiographs

  • Standard Radiographs Ankle or Standard Radiographs Foot
    • Typically normal, especially early in disease process
    • Rule out other pathology including fractures, , bone cysts
  • Potential findings
    • may be present
    • Fragmentation is frequently present

  • Findings
    • Localize inflammation to apophysis
    • Evaluate for other pathologies stress fracture, lytic lesions, osteomyelitis

 

Treatment

  • Indications
    • All patients
  • Activity modification/Rest
    • Discontinue offending activity
    • Achilles tendon stretches, hamstring stretches
    • Strengthening of dorsiflexors
  • Heel pads/cups
    • Insertion can offload some tenson on achilles
  • Immobilization in severe cases
    • Either Tall Walking Boot or Tall Walking Cast
    • May require non weight bearing status
  • Other
    • Ice
    • NSAIDS
    • Establish proper footwear
  • Prevention
    • Maintain calf flexibility and ankle dorsiflexion
    • Limit use of cleats or time on hard surfaces

Operative

  • Indications
    • No role for operative treatment
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Doctor visit helper

Prepare before seeing a doctor

A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Avoid heavy lifting, sudden bending, and prolonged bed rest.
  • Use comfortable posture and gentle movement as tolerated.
  • Discuss physiotherapy, X-ray, or MRI only when clinically needed.

OTC medicine safety

  • For mild back pain, pain-relief medicine may be discussed with a doctor or pharmacist.
  • Avoid repeated painkiller use if you have kidney disease, stomach ulcer, uncontrolled blood pressure, or are taking blood thinners.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Back pain with leg weakness, numbness around private area, loss of urine/stool control, fever, cancer history, or major injury needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Posterior Calcaneus Apophysitis

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.