Plantar fasciitis

Also called: Plantar heel pain; plantar fasciopathy

Exercise is the main treatment Strength Stretch Massage

Stabbing heel pain with the first steps in the morning that eases after a few minutes. It is an overload of the plantar fascia where it attaches to the heel bone, and it is almost always accompanied by tight calves and weak foot muscles.

How common: ~10% lifetime; the most common cause of heel pain

Open the Foot & Heel Relief routine All problems

What it is

The plantar fascia is a thick band running from the heel bone to the base of the toes, supporting the arch. Pain at its heel attachment is the classic presentation, and despite the name the tissue change is degenerative rather than inflammatory in most established cases - which is why anti-inflammatory approaches alone often disappoint.

The mechanism is nearly always overload: too much load on the fascia because something else is not doing its job. Restricted ankle dorsiflexion and weak intrinsic foot muscles are found so consistently that they are worth assuming present until proven otherwise.

What it feels like

Sharp, stabbing pain under the heel with the first steps out of bed
Eases after five or ten minutes of walking, then returns after sitting
Worse again at the end of a long day on your feet
Tender to press on a specific point at the inside front of the heel
Sometimes an ache along the arch as well as at the heel

What causes it

Most people have more than one of these at once, and they feed each other. Read the list looking for the two or three that sound like your week rather than for the one true answer — the ones that describe you are the ones worth acting on.

Restricted ankle dorsiflexion: If the ankle cannot bend enough, the foot compensates by pronating and elongating the arch, which loads the fascia on every step. This is the single most consistent finding and the most useful thing to fix.
Tight calves: The calf and the plantar fascia are mechanically continuous through the heel. A short, stiff calf pulls on the heel from above while the fascia pulls from below, and the attachment point takes the strain.
Weak intrinsic foot muscles: The small muscles inside the foot are the active support for the arch. When they are weak the passive structure - the fascia - carries the load it was only meant to share.
A sudden increase in load: A new job on your feet, a big increase in running, a holiday of walking, a change of footwear. Fascia adapts slowly and this is where most cases begin.
Body weight: Load through the heel is proportional to body weight and multiplied by activity. Weight gain is a recognised risk factor, particularly recent gain that the tissue has not adapted to.
Unsupportive or worn-out footwear: Flat, worn or very flexible shoes worn all day on hard floors increase the demand on the fascia. Suddenly switching from a heeled shoe to a flat one is a classic trigger.
Reduced big toe extension: The fascia tightens as the big toe extends at the end of each step - the windlass mechanism. A stiff big toe disrupts that and changes how the fascia is loaded.
Prolonged standing on hard surfaces: Static standing loads the fascia continuously with no muscle pumping and no variation. Occupations that involve it are consistently over-represented.
Age-related fat pad thinning: The heel fat pad thins with age, so there is less cushioning at exactly the point that is being overloaded.
Sleeping with the foot pointed: Overnight the fascia and calf shorten in a plantarflexed position. The first steps in the morning then load a shortened, cold tissue - which is precisely why the first step is the worst one.

Who tends to get it

Runners, particularly after a sharp increase in mileage
Anyone whose job involves standing or walking on hard floors all day
People with tight calves or restricted ankle range, which is most people
Anyone who has recently gained weight or changed footwear
Adults between forty and sixty, when it is most common

What makes it worse, and what settles it

Makes it worse

The first steps after any period of rest, particularly in the morning
Walking barefoot on hard floors during a flare
Continuing to run or stand at the same volume
Aggressive stretching alone with no strengthening, which relieves without changing the capacity
Sleeping with the foot pointed, which sets up the morning pain

Settles it

High-load plantar fascia strengthening - slow heel raises with the toes extended over a rolled towel - which has the best trial evidence of anything for this
Calf stretching and ankle mobility work to remove the upstream driver
Foot intrinsic strengthening so the fascia stops carrying the whole arch
Rolling the sole on a ball or a frozen bottle for symptomatic relief
Reducing the aggravating volume temporarily while the strength work builds capacity

What actually helps

The short version: Overload of the plantar fascia at the calcaneal insertion; almost always with restricted ankle dorsiflexion and weak intrinsics

Strength work: High-load plantar fascia strength - slow heavy calf raise with toes extended on a towel; Legs: Calves: Soleus; Feet, Toes, Ankles; Legs: Calves: Tibialis Posterior; Feet, Toes, Ankles: Intrinsic Foot Muscles

Stretching: Legs: Calves; Legs: Calves: Soleus; Feet, Toes, Ankles; plantar fascia specific stretch; Feet, Toes, Ankles: Plantar Fascia stretch

Massage: Feet, Toes, Ankles; Massage Ball - frozen bottle roll; Legs: Calves; Feet, Toes, Ankles: Plantar Fascia massage

Also worth doing: Supportive footwear; night splint (Physical Therapy item 685); avoid barefoot on hard floors while acute

What the evidence says: Rathleff RCT: high-load strength training beat plantar-specific stretching alone at 3 months. Stretching helps early; loading is what resolves it.

The names above are the Targets qFIT tracks — the Muscle Guide explains what each one does, and Quick Add switches on the Exercises you already have.

The qFIT routine for this

Ready-made routineFoot & Heel Relief

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Get it checked if…

Heel pain after trauma; numbness or burning suggests nerve entrapment; bilateral heel pain in a young man may be inflammatory (spondyloarthritis)

And whatever the body part: chest pain or unusual breathlessness on exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or one calf that is swollen, warm and painful. Any of those, stop and get assessed.

How it usually goes

This is slower than people expect. Most cases settle over three to twelve months, and high-load strength training produces faster improvement than stretching alone - typically noticeable at three months. The morning pain is the last thing to go and is a reasonable progress marker. Heel pain that is present at rest, that came on suddenly with a snap, that is associated with numbness, or that involves the whole heel rather than one point is worth having assessed rather than assumed.

Prevalence basis: Foot and ankle epidemiology reviews

Others the same routine covers

These share the Foot & Heel Relief routine, so the work is the same. If one of them also sounds like you, that is a reason to expect more from it, not less.

This is general information, not a diagnosis, and it cannot examine you. If it matches you, use it to ask better questions of a clinician rather than to replace one.

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