Plantar Fasciitis: What It Is, Why It Happens, and How to Get Real Relief

That stabbing pain in your heel when you take your first steps in the morning — sharp, persistent, and enough to make you dread getting out of bed — is one of the most recognisable signs of plantar fasciitis. It is the most common foot health complaint seen in podiatry clinics across the UK, yet it remains widely misunderstood. Many people walk around on it for months, hoping it will pass on its own, and often making things considerably worse in the process. If you have been ignoring heel pain, this guide will tell you exactly what is happening — and what to do about it.

What Is Plantar Fasciitis?

The plantar fascia is a thick band of connective tissue that runs along the sole of your foot, connecting your heel bone to the base of your toes. Its job is to absorb shock and support the arch of your foot during movement. Plantar fasciitis occurs when this tissue becomes inflamed — typically from repeated stress, overuse, or excessive and sustained tension.

The pain is usually concentrated at the heel or along the inner arch and is characteristically worst:

• First thing in the morning, on your first few steps
• After long periods of sitting or standing still
• After exercise, rather than during it

It often eases as you warm up and get moving — which is why many people convince themselves it is fine. It is not fine. Without proper treatment, it tends to deepen and extend, and the window for quick, straightforward recovery closes.

What Causes Plantar Fasciitis?

Common Risk Factors

Plantar fasciitis rarely has a single cause. It develops from a combination of mechanical, structural, and lifestyle factors:

• Sudden increases in activity — A sharp rise in running mileage, a new gym routine, or an unexpected long day on your feet can overload the fascia before it has adapted.
• Poor or worn-out footwear — Flat-soled shoes, tired trainers, or extended time barefoot on hard flooring puts unmitigated strain on the fascia.
• Foot structure — High arches, flat feet, or an abnormal gait alter how load is distributed across the foot with every step.
• Tight calf muscles or Achilles tendon — Reduced flexibility here creates additional pull on the plantar fascia.
• Age — Plantar fasciitis is most common between 40 and 60, as connective tissue gradually loses elasticity.
• Body weight — Increased load amplifies the forces the foot must absorb during normal walking.

Why Runners and Office Workers Are Most at Risk Right Now

Two groups are presenting with plantar fasciitis in significant and growing numbers: runners and people who have returned to office work.

The UK running boom, sustained by Park Runs, Couch to 5K, charity events, and a post-pandemic appetite for outdoor exercise, has brought a large wave of enthusiastic but underprepared runners whose feet are simply not conditioned for the distances they are attempting. Plantar fasciitis is the most common overuse injury in recreational running.

At the same time, the return to commuting has seen many people make a sudden shift from supportive home footwear to office shoes, spending long days on hard floors in footwear they had not worn in years. The result is a sharp rise in first-time foot clinic appointments.

If either of those describes you, you are not alone — and you do not have to put up with the pain.

How Is Plantar Fasciitis Diagnosed?

In most cases, a podiatrist can diagnose plantar fasciitis through a thorough clinical assessment. This involves examining your foot mechanics, observing your gait, and identifying the precise location and nature of your pain. Ultrasound imaging may be used to confirm the diagnosis and to rule out other causes — a heel spur, for example, or less commonly, a stress fracture.

It is worth being clear about heel spurs: they are often present alongside plantar fasciitis, but they are not always the root cause of pain. Effective treatment targets the soft tissue, not the bone.

Leaving plantar fasciitis undiagnosed matters beyond just the pain itself. People who adapt their walking pattern to avoid heel discomfort frequently develop secondary problems in the knees, hips, and lower back. Early diagnosis protects more than your foot.

You can view the full range of conditions we treat at Thames Foot Clinic to understand how we approach diagnosis and assessment.

Treatment Options for Plantar Fasciitis

The good news: plantar fasciitis responds well to conservative treatment, particularly when addressed early. A podiatrist will tailor a plan to your specific presentation rather than applying a generic protocol. Treatment typically draws on several approaches:

Targeted Stretching and Exercise

Specific stretches targeting the calf, Achilles tendon, and plantar fascia itself form the foundation of most treatment plans. The most effective include calf raises and wall stretches, towel stretches performed before getting out of bed in the morning, and plantar fascia massage using a frozen water bottle or massage ball rolled under the arch.

Consistency is the critical factor here. Stretching sporadically produces little result. A podiatrist will guide you through an appropriate programme and help you make it a sustainable daily habit.

Custom Orthotic Insoles

Custom orthotic insoles address the underlying biomechanical reasons the plantar fascia is under strain in the first place. By correcting how load is distributed across your foot, they reduce pressure on the fascia with every step you take — during activity and everyday walking alike.

Unlike generic insoles purchased off the shelf, custom orthotics are fabricated from a precise cast or scan of your foot and are designed specifically for your gait and foot structure.

Footwear Review

Your podiatrist can assess your current footwear and advise on what shoes are appropriate for your foot type, activity levels, and daily demands. This is one of the most straightforward and consistently impactful interventions available — and one of the most frequently overlooked.

Shockwave Therapy and Other Clinical Interventions

For persistent or chronic cases, shockwave therapy — which delivers targeted sound waves to stimulate natural tissue repair — has a strong body of clinical evidence behind it. Corticosteroid injections may be considered in some cases, though they are used cautiously, as repeated injections can weaken the fascia over time.

Surgery is rarely required and is only considered after all conservative options have been properly exhausted.

When Should You See a Podiatrist?

If your heel pain has persisted for more than a few weeks, is worsening, or is interfering with daily life or exercise, it is time to seek a professional assessment. Rest alone is rarely sufficient — without identifying and addressing the underlying cause, the problem almost always returns.

A good podiatrist will not simply advise you to stop what you love. They will identify why the plantar fascia is being overloaded and build a treatment plan designed to get you back to full movement, pain-free.

At Thames Foot Clinic, we take a whole-picture approach: assessing your foot mechanics, gait, footwear, and lifestyle before recommending treatment. Whether you are a runner sidelined by heel pain, an office worker who has been managing discomfort for months, or someone dealing with a foot or ankle problem that has simply been getting worse — we are here to help.

Learn more about our approach and expertise, browse the full list of conditions we treat, or visit our news section for ongoing foot health advice. When you are ready, get in touch to book an assessment at Thames Foot Clinic.