Plantar Fasciitis

What Causes Plantar Fasciitis?

Plantar fasciitis is pain in the heel and underside of the foot caused by irritation of the plantar fascia — a thick band of tissue that runs from your heel to your toes and supports the arch of your foot.

The classic symptom: sharp pain in the heel with the first few steps in the morning or after sitting for long periods. It eases as you walk around, then often returns after prolonged standing, walking, or running.

Here’s what happens: the plantar fascia is a load-bearing structure. When the load exceeds what the tissue can tolerate — usually due to a sudden increase in activity, poor foot mechanics, weakness in the foot and calf, or deconditioning — it becomes sensitised and painful.

Common causes include ramping up running mileage too quickly, returning to walking or standing work after time off, weak calf muscles, tight calves, poor footwear with inadequate support, and being overweight (which increases load through the plantar fascia).

I see this constantly among runners across Liverpool and Chester who’ve increased volume for a race, people returning to standing work after desk jobs, gym-goers in Merseyside doing high-volume jumping or plyometric training, and anyone who’s spent years wearing supportive shoes and then suddenly switches to minimalist footwear or goes barefoot.

How Plantar Fasciitis Develops

It usually starts gradually. A bit of heel discomfort first thing in the morning. You ignore it. It gets worse. Soon you’re hobbling for the first 10 minutes after getting out of bed, limping after sitting, and struggling with any prolonged walking or standing.

Acute Onset (Training Load Spike)

The most common trigger: you start running, ramp up walking volume, take up a new sport involving jumping, or return to a standing job after months of working from home.

Your plantar fascia hasn’t had time to adapt to the increased load. It becomes overloaded and painful. This is very treatable if caught early — load management and structured strengthening usually sort it within 6-8 weeks.

I see this among Liverpool and Chester runners preparing for marathons, retail and hospitality workers across Merseyside returning to standing shifts, and gym-goers who’ve added box jumps or skipping to their training.

Chronic/Persistent Pattern (Over 3 Months)

You’ve had heel pain for months, maybe years. It’s better some days, worse others. You’ve tried rest, stretching, insoles, new shoes. Nothing has properly fixed it.

This happens because plantar fasciitis becomes a chronic pain condition when it’s not managed properly early on. The tissue sensitises, pain becomes persistent, and simple load management isn’t enough anymore.

Chronic cases need more intensive treatment — progressive loading programmes, sometimes shockwave therapy, and significant commitment to rehab over 12-16 weeks. But even long-standing plantar fasciitis responds to the right approach.

Post-Injury or Biomechanical Pattern

Sometimes plantar fasciitis develops after an ankle sprain, Achilles injury, or calf strain. The original injury heals, but compensatory movement patterns or residual weakness lead to increased load through the plantar fascia.

Other times it’s purely biomechanical — flat feet, high arches, excessive pronation (foot rolling inwards), tight calves, or weak foot intrinsic muscles. These factors increase stress on the plantar fascia over time.

This type needs assessment of foot and ankle mechanics, calf flexibility, and foot strength. Simply treating the heel pain without addressing the underlying mechanics rarely works.

What You Can Expect in Your Assessment

I’ll take a detailed history — when the pain started, what makes it worse, what you’ve tried already, your activity levels, footwear, and what your goals are. Whether that’s getting back to running along the Chester Greenway, being able to walk the dog without limping, or just getting through a work shift without heel pain.

Then I’ll assess your foot and ankle — palpation to identify the exact location of pain, range of movement, calf flexibility, foot strength, and loading tests to reproduce your symptoms.

I’ll watch you walk and often assess single-leg calf raises to see how your foot and ankle are functioning under load.

By the end of the session, you’ll have:

Do I Need a Scan?

Usually not. Plantar fasciitis is a clinical diagnosis. Scans rarely change management.

Ultrasound can show thickening of the plantar fascia and sometimes calcification or a heel spur, but these findings don’t correlate well with symptoms. Plenty of people have thickened fascia on ultrasound with no pain, and plenty of people have significant pain with normal-looking scans.

You might need imaging if:

• There’s a history of trauma and I’m concerned about a plantar fascia rupture
• Symptoms aren’t typical for plantar fasciitis and I suspect something else (stress fracture, nerve entrapment, fat pad irritation)
• You’ve been through 12+ weeks of good rehab and symptoms aren’t improving — we need to reconsider the diagnosis

But for classic plantar fasciitis, clinical examination is enough. We can start treatment straight away without waiting for scans.

Why Rest Alone Doesn’t Work

People rest from walking and running, the heel pain settles a bit, they return to activity, and within days or weeks it flares up again. This is the classic pattern.

Here’s why: rest reduces pain by removing the aggravating load, but it doesn’t build load tolerance in the plantar fascia. When you return to the same activities at the same intensity, you’re asking deconditioned tissue to handle loads it couldn’t manage before.

Complete rest also leads to further weakening of the foot and calf muscles, which makes the problem worse when you return to activity.

What Does Plantar Fasciitis Rehab Involve?

Here’s what most plantar fasciitis rehab programmes include:

Calf strengthening: The calf muscles and plantar fascia work together. Weak or tight calves increase stress on the plantar fascia. Progressive calf raises — starting with double-leg, progressing to single-leg, adding load over time — are the cornerstone of plantar fasciitis rehab.

Foot intrinsic muscle strengthening: Small muscles in your foot support the arch and help control how load is distributed. Exercises like toe curls, arch doming, and resistance band work build strength in these often-neglected muscles.

Load management: Reducing aggravating activities temporarily while building capacity. This doesn’t mean complete rest — it means avoiding sudden spikes in walking, running, or standing duration while you work on strengthening. Often this involves modifying training, using supportive footwear, or temporarily reducing standing time at work.

Stretching (with caution): Gentle calf stretching can help if tightness is a contributing factor, but aggressive stretching of the plantar fascia itself often makes it worse. I’ll guide you on what’s appropriate.

Footwear assessment and modification: Sometimes simple changes — more supportive shoes, avoiding flat unsupportive footwear, or temporary use of insoles — can offload the plantar fascia and reduce symptoms while you build strength.

Shockwave therapy (for chronic cases): If you’ve had plantar fasciitis for over 3 months and it’s not responding to strengthening alone, shockwave therapy can be highly effective. It stimulates tissue healing and reduces pain. I offer this alongside structured rehab programmes.

Progression criteria: Rehab is guided by symptom response, not arbitrary timescales. We progressively increase load on the calf and foot as symptoms allow, using pain monitoring to guide how much is too much.

How Long Does Recovery Take?

Realistic timescales for plantar fasciitis:

Acute cases (less than 6 weeks duration): 6-8 weeks to significant improvement with structured rehab and load management. You won’t be completely out of activity — we modify it and work around symptoms.

Subacute cases (6 weeks to 3 months): 8-12 weeks. The tissue is more sensitised and takes longer to settle, but responds well to progressive loading.

Chronic cases (over 3 months): 12-16 weeks, sometimes longer. Long-standing plantar fasciitis often needs shockwave therapy alongside rehab. The longer you’ve had it, the more patient you need to be. But even cases that have dragged on for years can improve significantly with the right approach.

The key variable is consistency with rehab. If you do the calf strengthening exercises 4-5 times per week and manage load appropriately, you’ll see improvement. If you’re sporadic with exercises and keep overloading the foot with long walks or runs, recovery drags on indefinitely.

When to Book an Assessment

Location and Booking

I run a clinic in Chester, with appointments available Monday, Wednesday, Thursday, and Friday.

Whether you’re a runner across Cheshire with heel pain affecting training, a retail worker from Chester struggling with standing shifts, or someone from Cheshire who’s been dealing with chronic plantar fasciitis for months, I can help.

Book online to see available slots, or get in touch if you’ve got questions before booking.

No hard sell. No obligation. Just honest physio focused on getting your heel pain sorted with a structured plan that actually works.