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Shockwave therapy

Pressure waves delivered through the skin to a painful tendon. No needles, no anaesthetic, no downtime — and it works best for a specific set of stubborn problems rather than for pain in general.

A shockwave therapy handpiece being applied to a patient's heel.
What it is
Pressure waves applied through the skin, with a handheld probe.
A course
Usually three to five sessions, about a week apart, 10 to 15 minutes each.
When it works
Improvement usually builds over the weeks after the course, not during it.

What is shockwave therapy?

Shockwave therapy, also written shock wave therapy, uses a handheld probe to deliver rapid pressure waves into the painful tissue. The waves irritate the area in a controlled way, which appears to restart a stalled healing response: new blood vessels form, and the nerve endings that have been signalling pain settle down.

It is used for tendon problems that have not settled on their own. Those tend to be the ones where the tissue has stopped repairing itself properly rather than being acutely inflamed — which is why shockwave suits long-standing pain better than a fresh injury.

It is not a quick fix, and not a first step. It is usually considered after several months of pain that has not responded to rest, load management, stretching and physiotherapy — and it is used alongside those, not instead of them.

Focused or radial?

Two machines, often both called shockwave. They are not the same, and they suit different problems.

 RadialFocused
How the wave behavesSpreads out from the skin, strongest at the surfaceConverges at a set depth, strongest at the target
SuitsBroad, shallow problems — plantar fascia, tennis elbow, trigger pointsDeeper or precise targets — calcific deposits in the shoulder, deep tendon attachments
How it feelsA rapid tapping, uncomfortable over a tender spotA deeper thud, and can be more intense
AnaestheticNot usedNot usually needed

Which machine is used depends on where the problem sits and how deep it is. Both are given as a course rather than a single treatment.

What the evidence supports

Shockwave is genuinely useful for some conditions and marginal for others. It is worth knowing which is which before starting a course.

Strongest evidence

Reasonable evidence

Weaker evidence

Who should not have it

  • Pregnancy
  • A bleeding disorder, or treatment with blood thinners
  • Infection, a tumour or an open wound in the area to be treated
  • Over a growth plate in children and teenagers
  • Over a nerve or large blood vessel lying close to the surface
  • A recent steroid injection into the same area — usually a wait of about six weeks

What the treatment involves

Shockwave therapy treatment is given as a course rather than a single session, and the exercises alongside it are part of the plan.

Assessment first

Examination, and imaging where the diagnosis is not clear. Shockwave is aimed at a specific structure, so the structure has to be identified first.

The session

Gel on the skin, then the probe over the tender area for about 10 to 15 minutes. It is uncomfortable while the machine is running, and the intensity is adjusted to what you can tolerate. No anaesthetic, and you walk out afterwards.

Afterwards

Aching or tenderness for a day or two is normal, and occasionally some redness or bruising. Anti-inflammatory tablets are usually avoided just afterwards, since the treatment works through an inflammatory response.

The course

Three to five sessions, about a week apart. Loading exercises alongside it matter: shockwave prepares the tendon, and the exercise is what rebuilds it.

Reviewing it

Most of the improvement shows in the weeks after the course finishes, so it is judged at around two to three months. If nothing has changed by then, repeating it is not usually the answer.

Results and risks

For plantar fasciitis and calcific shoulder tendinitis, a good proportion of people improve substantially after a course, and some avoid an injection or an operation. For other tendon problems the effect is more modest, and it is best thought of as one part of a rehabilitation plan rather than a treatment on its own.

  • Soreness during and after treatment — the usual experience
  • Redness, swelling or small bruises over the treated area
  • A short flare of pain in the days afterwards
  • Numbness or tingling, briefly
  • No benefit, in a proportion of people

Why see us about it

  • The diagnosis before the machine. Heel pain is not always plantar fasciitis, and elbow pain is not always a tendon.
  • An honest view of the odds for your particular problem, including when the evidence is thin.
  • The rest of the plan. Loading exercises, footwear and load management decide how much the treatment holds.

Common questions

Does shockwave therapy hurt?

It is uncomfortable while the machine is running, particularly over a tender spot, and the intensity is adjusted to what you can tolerate. Most people describe aching for a day or two afterwards rather than pain.

How many sessions will I need?

Usually three to five, about a week apart. If there has been no change two to three months after the course, more sessions are unlikely to help.

How soon will it work?

Not immediately. Improvement usually builds over the weeks after the course finishes, which is why it is reviewed at around two to three months.

Can I exercise during the course?

Yes, and the loading exercises you are given are part of the treatment. What is usually paused is the activity that keeps aggravating the tendon, and hard training on the treated area right after a session.

Is it safe?

For most people, yes. It is avoided in pregnancy, over growth plates in children, where there is infection or a tumour in the area, and in people with bleeding disorders or on blood thinners.

Do I need a referral?

No. Bring any scan reports, and a note of what treatment you have already had for the problem.

Related conditions

Plantar fasciitis · Tennis elbow · Achilles tendon injuries · Patellar tendonitis · Myofascial pain · Hip pain

Book a consultation

Bring the history of what you have tried. Shockwave is chosen for problems that have stopped responding to the simpler things.

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