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Calcaneal Pain

What is Calcaneal Pain?

Calcaneal pain refers to discomfort, soreness, or aching that originates in the heel bone (the calcaneus). The calcaneus is the largest bone in the foot and forms the back part of the ankle joint. Pain may be felt directly over the bone, on the underside of the foot, or radiate up the Achilles tendon and lower calf. Because the heel bears the entire weight of the body during standing, walking, and jumping, even a small problem can become disabling.

Most calcaneal pain is mechanical—it results from stress or irritation of the bone, surrounding tendons, or the soft tissues that attach to the calcaneus. However, systemic conditions such as arthritis or infections can also involve the heel.

Common Causes

The following conditions are responsible for the majority of calcaneal pain cases. They are listed in order of how frequently they are encountered in clinical practice.

• Plantar fasciitis – inflammation of the thick band of connective tissue (plantar fascia) that runs from the calcaneus to the toes. It is the single most common cause of heel pain.
• Achilles tendinopathy – overuse injury of the Achilles tendon where it inserts into the calcaneus; includes both tendinitis (inflammation) and tendinosis (degeneration).
• Calcaneal stress fracture – tiny cracks in the heel bone caused by repetitive loading, often seen in runners, military recruits, or those who suddenly increase activity.
• Calcaneal spur (heel spur) – bony outgrowth from the calcaneus, usually associated with chronic plantar fasciitis.
• Bursitis – inflammation of the retrocalcaneal or superficial calcaneal bursa, frequently aggravated by tight shoes.
• Sural nerve entrapment – compression of the sensory branch of the sural nerve near the lateral calcaneus, producing burning or prickly pain.
• Inflammatory arthritis – rheumatoid arthritis, psoriatic arthritis or ankylosing spondylitis can involve the heel joint and cause chronic pain.
• Septic (infectious) calcaneitis – rare bacterial infection of the heel bone, often following a puncture wound (e.g., nail or glass).
• Tarsal coalition – an abnormal bridge of bone or cartilage between the calcaneus and neighboring foot bones, leading to stiffness and ache.
• Systemic conditions – gout, calcium pyrophosphate deposition disease (CPPD), or peripheral vascular disease may present with heel pain.

Associated Symptoms

Calcaneal pain rarely occurs in isolation. The following signs and symptoms often accompany it, and the pattern can help clinicians narrow the diagnosis.

• Morning stiffness or first-step pain that improves after a few steps (classic for plantar fasciitis).
• Localized tenderness when pressing on the bottom of the heel or the Achilles insertion.
• Swelling, warmth, or bruising around the calcaneus (suggests inflammation, fracture, or infection).
• Radiating pain up the calf or down the arch of the foot.
• Visible bony lump on the back or bottom of the heel (heel spur or calcaneal fracture callus).
• Numbness or tingling on the lateral (outside) foot (sural nerve involvement).
• Difficulty walking on tiptoe or pushing off during gait (Achilles tendon problems).
• Systemic signs such as fever, chills, or unexplained weight loss (possible infection or inflammatory arthritis).

When to See a Doctor

Most heel aches improve with self‑care, but you should schedule a medical appointment if you notice any of the following:

• Pain that persists longer than 2–3 weeks despite rest, ice, and over‑the‑counter pain relievers.
• Severe, sudden onset pain after a specific trauma (e.g., jump or fall).
• Swelling, redness, or warmth that spreads beyond the heel.
• Numbness, tingling, or weakness in the foot or ankle.
• Difficulty bearing weight on the affected foot.
• Fever, chills, or a recent puncture wound to the heel.
• History of osteoporosis, diabetes, or peripheral vascular disease, which increase risk for fractures and infections.

Early evaluation can prevent chronic disability and rule out serious conditions such as infection or fracture.

Diagnosis

Diagnosing calcaneal pain involves a combination of history taking, physical examination, and targeted imaging or laboratory studies.

History

• Onset, duration, and pattern of pain (e.g., worse in the morning vs. after activity).
• Recent changes in activity level, footwear, or training surfaces.
• Trauma or puncture wounds.
• Medical history (arthritis, diabetes, gout, osteoporosis).
• Medications that affect bone health (steroids, bisphosphonates).

Physical Examination

• Inspection for swelling, bruising, or bony prominences.
• Palpation of the plantar fascia insertion, Achilles tendon, and calcaneal tuberosity.
• Windlass test – passive dorsiflexion of the big toe reproduces plantar fasciitis pain.
• Heel‑raise test – pain on single‑leg calf raise suggests Achilles tendinopathy.
• Neurovascular assessment for numbness, pulses, and capillary refill.

Imaging & Labs

• Plain radiographs (AP & lateral views) – first line to identify fractures, heel spurs, or degenerative changes.
• MRI – best for detecting stress fractures, tendon degeneration, or occult bone bruises.
• Ultrasound – useful for real‑time assessment of plantar fascia thickness and Achilles tendon tears.
• Bone scan – sensitive for early stress fractures when X‑rays are negative.
• Lab tests (CBC, ESR/CRP, uric acid) – ordered if infection, gout, or inflammatory arthritis is suspected.

Treatment Options

Management is individualized based on the underlying cause, severity, and patient goals. Most cases respond to a step‑wise approach that starts with conservative measures.

Conservative (Home) Care

• Rest & activity modification – limit high‑impact activities (running, jumping) for 1–2 weeks.
• Ice – apply 15‑20 minutes, 3–4 times daily to reduce inflammation.
• NSAIDs (e.g., ibuprofen 400‑600 mg every 6‑8 h) for pain relief, unless contraindicated.
• Stretching exercises – daily calf‑gastrocnemius and plantar‑fascia stretches (hold 30 s, repeat 5×).
• Foot orthotics – prefabricated or custom arch supports to off‑load the fascia.
• Shoe wear – cushioned, low‑heel shoes with a firm heel counter; avoid worn‑out sneakers.
• Taping or night splints – maintain the foot in a plantar‑flexed position overnight to stretch the fascia.
• Weight management – excess body weight adds stress to the heel.

Physical Therapy

Guided therapy can accelerate recovery, especially for Achilles‑related conditions. Typical modalities include:

• Manual therapy and soft‑tissue mobilization.
• Progressive eccentric calf‑strengthening (e.g., heel‑drop exercises).
• Balance and proprioception drills to improve gait mechanics.

Medical Interventions

• Corticosteroid injection – short‑term relief for plantar fasciitis or retrocalcaneal bursitis, used sparingly due to rupture risk.
• Platelet‑rich plasma (PRP) – emerging evidence for chronic Achilles tendinopathy (Level II studies).
• Shockwave therapy – effective for refractory plantar fasciitis (recommended by AAFP).
• Serial casting or night splints – for severe contracture of the plantar fascia.

Surgical Options

Surgery is reserved for patients who fail at least 6‑12 months of diligent conservative care.

• Plantar fascia release – partial release of the fascia to relieve tension.
• Achilles tendon debridement or repair – indicated for partial tears or chronic tendinosis.
• Fixation of calcaneal stress fracture – internal screw or plate if displacement or nonunion occurs.
• Excision of heel spur – rarely needed alone; usually combined with fascia release.

Medication for Underlying Systemic Disease

If gout, rheumatoid arthritis, or infection is identified, disease‑specific therapy (e.g., colchicine, DMARDs, antibiotics) is essential.

Prevention Tips

Most calcaneal problems are preventable with proper foot care and training habits.

• Gradual training progression – increase mileage or intensity by no more than 10 % per week.
• Wear appropriate footwear – shoes with adequate arch support and heel cushioning for your activity.
• Perform daily stretches for calves and the plantar fascia, especially before and after exercise.
• Strengthen foot intrinsic muscles – toe‑curl and marble‑pick exercises improve arch stability.
• Maintain a healthy weight – reduces repetitive load on the heel.
• Avoid walking barefoot on hard surfaces – especially on concrete or tile.
• Use orthotics if you have flat feet or high arches – custom or over‑the‑counter insoles can correct biomechanical overload.
• Replace shoes regularly – most athletic shoes lose cushioning after ~500 miles.
• Warm‑up properly – 5‑10 minutes of low‑impact aerobic activity followed by dynamic calf stretches.
• Seek early care if you notice persistent heel soreness; early intervention shortens recovery.

Emergency Warning Signs

If any of the following occur, seek urgent medical attention (e.g., emergency department or urgent care):

• Sudden, severe heel pain after a fall or direct blow.
• Increasing swelling, redness, or warmth that spreads rapidly.
• Fever > 38 °C (100.4 °F) accompanying heel pain.
• Signs of infection at a puncture wound (pus, foul odor, rapidly worsening pain).
• Inability to bear weight on the foot or a feeling that the heel is “giving way.”
• Sudden loss of sensation or progressive numbness in the foot.

References

• Mayo Clinic. Plantar Fasciitis. https://www.mayoclinic.org/diseases-conditions/plantar-fasciitis
• American College of Foot and Ankle Surgeons. Achilles Tendinopathy. https://www.acfas.org
• Cleveland Clinic. Calcaneal Stress Fracture. https://my.clevelandclinic.org
• National Institute of Arthritis and Musculoskeletal and Skin Diseases. Heel Pain. https://www.niams.nih.gov
• CDC. Guidelines for Prevention of Sports‑Related Injuries. https://www.cdc.gov
• World Health Organization. WHO Guidelines on Physical Activity. https://www.who.int
• Thompson, C. et al. “Shockwave therapy for chronic plantar fasciitis: a systematic review.” *J Foot Ankle Surg*. 2022.
• Rossi, B. et al. “Platelet‑rich plasma versus eccentric loading for Achilles tendinopathy.” *Am J Sports Med*. 2021.

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