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How Does Shockwave Therapy (ESWT) Work?

An advanced tool in expert hands — not just another machine-based treatment.

Shockwave Therapy – or more precisely, Extracorporeal Shockwave Therapy (ESWT) – is an increasingly popular option for treating persistent soft tissue injuries. And rightly so. But before we dive in, let’s clear one thing up: this isn’t the kind of “shock treatment” from outdated mental health images or hospital dramas. No electrodes, no drama – just science and sound waves doing very clever things.

Where Did It Come From?

The technology behind shockwave therapy started life not in medicine, but in aerospace engineering. Back in the mid-20th century, engineers at Dornier noticed tiny pits forming on the metal surfaces of aircraft flying at supersonic speeds. These were caused by a process called cavitation — tiny bubbles forming and imploding due to pressure changes, creating micro shockwaves.

Icon demonstrating shockwave therapy cavitation at Chris Heywood Physio across Northampton, Kettering & Market Harborough

Fast forward through years of collaboration between engineers and medical researchers, and this phenomenon was harnessed into medical-grade devices – originally for breaking down kidney stones (lithotripsy) and now adapted for soft tissue injuries.

At Chris Heywood Physio, I use a form of this technology called radial ESWT – a gentler, targeted version suitable for musculoskeletal treatment.

What Does Shockwave Therapy Do?

What Does Shockwave Therapy Do?

The principle is beautifully simple: we introduce controlled, mechanical pulses into the injured area. This stimulates a mild inflammatory response — yes, inflammation can be a good thing when it's carefully applied. It’s your body’s natural way of healing itself.

Think of it as a second chance. If your original injury didn’t heal fully — or if it’s been stuck in a chronic phase — ESWT helps reboot the healing process.

Shockwave works by:

  • Stimulating blood flow

  • Encouraging cell regeneration

  • Promoting collagen remodelling

  • Resetting pain signals

Icon showing a shockwave therapy applicator at Chris Heywood Physio across Northampton, Kettering & Market Harborough

Why I Don’t Offer Standalone Shockwave Sessions

This is where I differ from many clinics. You won’t find “book 8 shockwave sessions and get 2 free” on my website because ESWT should never be a one-size-fits-all solution. It needs to be part of a bigger picture — part of a proper assessment and treatment plan.

I use ESWT when it’s the right tool for the job, not just because it’s flashy or trending. If your injury doesn’t suit shockwave, I will tell you – honestly. If it does, we’ll integrate it into a structured rehab plan tailored to you. That’s where it makes the biggest impact.

Research shows it’s particularly effective for:

 

Chronic tendinopathies (like Achilles, patellar, or rotator cuff issues)

  • Plantar fasciitis (in some cases)

  • Medial tibial stress syndrome (shin splints)

  • Deep muscular pain syndromes

  • Certain ligament injuries

 

And it’s backed by a growing body of clinical evidence. But there’s a catch — it only works when used properly and at the right time.

What Does It Feel Like?

What Does it Feel Like?

Everyone experiences shockwave slightly differently, but most describe it as a series of rapid taps or pulses on the skin — like someone firmly prodding you with a finger. It’s not painful, but it can feel intense at first. Most people adapt quickly, and many report a noticeable reduction in pain by the end of the session.

 

I always adjust the intensity to suit you – enough to trigger the desired biological response, but never beyond what’s tolerable.

How Long Does It Take?

How Long Does it Take?

The shockwave part itself takes just a few minutes, but I never treat in isolation. Each session lasts a full 60 minutes, giving us time for hands-on treatment, exercise prescription, and progress review.

A typical course looks like this:

  • 1 weekly ESWT sessions/treatment for approximately 4-6 weeks (may be less or more, but if there are no signs of improvement after 2-3 it may not be the best treatment modality for you - I will review and speak candidly with you)

  • A follow-up review 4–6 weeks after the cessation of the Shockwave Therapy to assess long-term progress after you have been implementing your individualised self rehab plan.

This approach ensures we’re not just chasing quick wins – we’re aiming for lasting recovery.

Who Is It For?

I only recommend ESWT for:

  • Injuries that are over 12 weeks old

  • Conditions that haven’t improved with rest, rehab, orthotics, or injections

While there are emerging studies exploring its use in newer injuries, I prefer to stick with proven clinical guidelines and offer honest advice. If your body is still in the early stages of healing, it’s often best to let it run its course.

When Not To Have Shockwave Therapy

When Not to Have Shockwave

To keep things safe and effective, I won’t offer ESWT if you:

  • Are pregnant

  • Are taking anticoagulants (e.g. warfarin, rivaroxaban) or certain antiplatelets (e.g. clopidogrel)

  • Have a bleeding or clotting disorder

  • Are under 18

  • Have a known cancer diagnosis affecting bone

  • Have an active infection at the treatment site

  • Have had a steroid injection to the same area in the past 6–8 weeks

  • Have a significant history of tendon or ligament rupture

I will cover all of this in your initial assessment — just part of delivering treatment safely and ethically.

Cost And Transparancy

Cost and Transparency

Your initial assessment (60 minutes) is charged at £100, just like any new injury or new patient appointment.

All follow-up sessions, including any ESWT treatment, are included in your standard 60-minute session – no extra fees, no hidden costs.

This way, I can focus on what helps you, not just pushing a particular machine. If shockwave therapy works for your condition, I'll use it. If it doesn’t, I won’t waste your time or money.

In Summary

At Chris Heywood Physio, I treat people – not protocols. Shockwave Therapy is a powerful tool in the right hands and at the right time. I will use it only when it makes clinical sense and always as part of a comprehensive treatment plan designed around you.

If you’ve been struggling with a chronic tendon or soft tissue issue that hasn’t responded to conventional treatment, it might be time to give your body a second chance — with expert support guiding you through it.

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Shockwave Therapy FAQ's

Contact Info

On a Monday and Tuesday I work as a specialist contractor but I can still be contacted for enquiries. You are welcome to call but it is often faster for me to reply via a contact form or watsapp message, simply as my phone will be on silent in clinic. Either way, I will reply as soon as possible, which in the week, is almost always on the same day at the latest.

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Clinic Opening Hours

The Clinic is located at  2 Old Road, Scaldwell, Northants, NN6 9LA - More info

Mon - Tues

Weds - Fri

Sat -Sun

Closed for Contract Work

0900 - 1330

Closed (Family Time!)

** Please note that online sessions can sometimes be arranged outside of normal clinical hours on request.**

Chris Heywood Physio Ltd is a company registered in England and Wales. Registered number 12948445. Registered Office: 2 Old Road, Scaldwell, Northants, NN6 9LA

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