Heel pain is the single most common foot complaint in India. It affects people across all ages, all activity levels, and all occupations – from teenagers in school shoes to elderly adults, from sedentary office workers to competitive runners. While the majority of heel pain is plantar fasciitis, there are several distinct causes of heel pain, each with slightly different insole requirements. Choosing the right insole means understanding which cause is producing your specific pain.
This guide covers every major cause of heel pain in depth, explains the mechanical mechanisms by which insoles address each, and gives you the information to make an informed choice. For the specific deep-dive on plantar fasciitis, see our dedicated plantar fasciitis insoles guide. For the broader picture of how orthotic insoles work, read the complete orthotic insoles guide.
What Are the Different Causes of Heel Pain?
Plantar Fasciitis – The Most Common
Plantar fasciitis accounts for approximately 80% of all heel pain. The pain is on the bottom of the heel, at the insertion of the plantar fascia on the calcaneus. It is worst on first steps in the morning, eases with movement, and returns after prolonged standing or activity. The full mechanism and treatment is covered in detail in our plantar fasciitis guide.
The insole requirement for plantar fasciitis: deep heel cup, firm arch support (PP shell), thick MCR heel cushioning.
Heel Spurs (Calcaneal Spurs)
Bony outgrowths on the calcaneus, most commonly on the inferior (bottom) surface at the plantar fascia attachment – called inferior calcaneal spurs – or on the posterior surface at the Achilles tendon insertion – called posterior calcaneal spurs. Heel spurs are associated with chronic plantar fasciitis and Achilles tendinopathy respectively.
A critical point that most people misunderstand: heel spurs themselves do not cause pain in the majority of cases. Population studies have found calcaneal spurs in 15 to 27% of people, most of whom have no heel pain at all. The pain that is attributed to heel spurs is almost always the soft tissue inflammation around the spur – the plantar fasciitis or Achilles tendinopathy – rather than the spur itself.
This means that heel spur treatment is essentially the same as plantar fasciitis treatment. The insole requirements are the same: heel cup, arch support, MCR cushioning. Surgery to remove the spur is rarely indicated and is not required for most heel spur presentations.
Fat Pad Atrophy
The calcaneus is protected by a specialised fat pad enclosed in fibrous septa. This biological cushion is extraordinarily effective when intact – it can withstand repeated high-force impacts for decades. With age, however, the fat cells atrophy and the fibrous septa weaken, reducing the thickness and resilience of the pad. Certain medical conditions accelerate this process: diabetes, rheumatoid arthritis, and prolonged corticosteroid use can all thin the heel fat pad.
As the fat pad loses volume, impact forces reach the calcaneus more directly. The pain from fat pad atrophy is different from plantar fasciitis – it is centrally located under the heel bone (rather than slightly forward and medial as in plantar fasciitis), it is present with any weight-bearing rather than specifically on first steps, and it is described more as bruising pain than the sharp stabbing quality of plantar fasciitis.
Insole treatment for fat pad atrophy focuses on compensating for the lost natural padding: thick MCR heel cushioning is the primary requirement, with a heel cup to contain what remains of the fat pad. For diabetic patients with fat pad atrophy, the insole requirements overlap with the protective requirements of diabetic foot care – see our diabetic foot insoles guide.
Achilles Tendinopathy
Degeneration of the Achilles tendon, either at its insertion on the posterior calcaneus (insertional Achilles tendinopathy) or in the mid-portion of the tendon approximately 2 to 6 cm above the heel (mid-portion Achilles tendinopathy). The pain is at the back of the heel or in the lower Achilles tendon, not under the heel. It is important to distinguish this from plantar fasciitis because the insole requirement is different.
For Achilles tendinopathy, a heel lift – a slightly elevated heel in the insole – reduces the tensile load on the Achilles tendon insertion by placing the tendon in a slightly shorter position. This is the primary insole modification for Achilles-related heel pain. A heel cup still helps by stabilising the heel, but the elevation component is specifically important for Achilles conditions.
Haglund’s Deformity (Pump Bump)
A bony prominence on the upper posterior calcaneus. The Achilles tendon inserts just below this prominence, and the retrocalcaneal bursa (a fluid-filled sac) sits between the tendon and the bone. Haglund’s deformity produces pain at the back of the heel through Achilles tendon impingement and retrocalcaneal bursitis. Tight, rigid-backed shoes aggravate it. Heel lifts that reduce posterior calcaneal prominence in the shoe and reduce Achilles tendon compression are helpful.
Sever’s Disease (Calcaneal Apophysitis)
An overuse injury in children and adolescents aged 8 to 14, particularly during growth spurts. The growth plate (apophysis) of the calcaneus becomes inflamed from repetitive traction by the Achilles tendon during high-activity periods. Pain is at the back and bottom of the heel, worse with running and jumping. Insoles with heel cushioning and a heel lift are part of standard management.
How Insoles Address Heel Pain: The Specific Mechanisms
- Heel cushioning: The primary mechanism for all heel pain conditions. Reducing the peak impact force at the heel site reduces aggravation of the inflamed tissue and allows healing to proceed. MCR provides superior heel cushioning compared to EVA – distributing force more broadly and maintaining its properties through extended use.
- Heel cup: Cradles the calcaneus and prevents the heel fat pad from spreading laterally with impact. Maintains the fat pad’s protective function. Guides the heel into a more neutral alignment, reducing the valgus heel position that is common in flat feet and that aggravates plantar fasciitis.
- Arch support: Reduces the tensile load on the plantar fascia, which is the primary cause of plantar fasciitis pain. Less relevant for pure Achilles tendinopathy but still beneficial for most heel pain presentations that involve any element of overpronation.
- Heel lift (for Achilles conditions): A slight elevation of the heel reduces the angle of Achilles tendon loading, decreasing the tensile stress at the insertion and in the mid-portion. Typically 5 to 10 mm of heel elevation is used.
Common Mistakes When Treating Heel Pain with Insoles
- Not wearing insoles consistently: The mechanical benefit of an insole is present only when the insole is in the shoe and the shoe is on the foot. Many people wear their insoles in their sports shoes but walk barefoot on hard marble floors at home – essentially undoing several hours of therapeutic loading reduction with each barefoot hour.
- Choosing insoles that are too soft: Soft foam insoles compress flat under body weight and provide no meaningful arch support. If you can compress the arch support area of your insole easily with your thumb, it will not provide meaningful correction during weight-bearing.
- Expecting overnight results: Plantar fasciitis is a tissue injury that heals slowly. Most people need four to eight weeks of consistent insole use before seeing significant improvement. Many give up at week two when improvement has not been dramatic.
- Not addressing footwear simultaneously: Wearing good insoles in unsupportive footwear with flat heel counters reduces the overall benefit. The shoe’s heel counter should provide adequate heel stability for the insole to work correctly.
Browse Insoleace Heel Pain Insoles
Insoleace’s heel pain and plantar fasciitis insoles are available at insoleace.com/heel-pain-plantar-fasciitis. For related conditions see flat feet insoles and long standing hours insoles. For the complete product range see insoleace.com/products.
FAQ
- What insoles are best for heel pain in India? Insoles with deep heel cups, thick MCR cushioning, and firm arch support are most effective. For Achilles-related heel pain, a heel lift component is additionally beneficial. Browse at insoleace.com/heel-pain-plantar-fasciitis.
- Is heel pain at night different from morning heel pain? Morning heel pain on first steps is characteristic of plantar fasciitis – the fascia shortens overnight and stretches painfully on loading. Persistent heel pain at rest or at night can indicate inflammatory conditions or more serious pathology and should be assessed by a doctor.
- Can heel pain be caused by flat feet? Yes. Flat feet and overpronation increase plantar fascia tensile loading significantly, making flat feet one of the primary risk factors for plantar fasciitis. See our flat feet insoles guide.
- How long does heel pain take to heal with insoles? For plantar fasciitis, most cases significantly improve within four to eight weeks. Complete resolution typically takes six to twelve months. For fat pad atrophy, insoles manage the condition long-term rather than curing it.