Shockwave vs Ultrasound Therapy in Cape Town: Which One Does What

Shockwave therapy and therapeutic ultrasound sit next to each other on most physiotherapy treatment lists, and from the outside they look like much the same thing: a machine, some gel, a probe pressed against something sore. People regularly book one when they wanted the other. They are not interchangeable, and the research behind them is not equally strong.

What is shockwave therapy?

Extracorporeal shockwave therapy delivers high-energy acoustic pulses into tissue through the skin. The pulses are mechanical rather than electrical, and you feel them clearly: a rapid tapping that gets noticeably sharper over the spot that is most irritated. The working idea is that controlled mechanical stress provokes a healing response in tissue that has stalled, and that it changes how the area reports pain.

It is used mainly for stubborn tendon problems that have not settled on their own: plantar fasciitis, Achilles and patellar tendinopathy, gluteal tendinopathy, tennis elbow. Typically these are months-old problems rather than fresh injuries.

What is therapeutic ultrasound?

Therapeutic ultrasound uses sound waves above the range of human hearing, delivered through gel with a small round head kept moving over the area. You usually feel very little, sometimes a mild warmth. The intended effects are thermal and mechanical at tissue level, and it is generally used as one component of a treatment session rather than as the session itself.

Shockwave therapy vs ultrasound: what the evidence says

This is where the two genuinely separate, and it is worth being straight about it. A systematic review and meta-analysis comparing the two head to head for plantar fasciitis found shockwave came out ahead on pain during activity, while several other measures showed no significant difference at all: morning pain on those first steps out of bed, overall functional impairment, and AOFAS scores were statistically similar between the two.

The authors were careful about their own findings, and so am I. The review pooled seven studies and 369 patients, which is small, and the variation between studies was very high on some measures. It points in a direction rather than settling the question.

Taking the wider literature together, shockwave has the stronger evidence base for persistent tendon problems. Therapeutic ultrasound has a weaker and more mixed one, and is best understood as an adjunct, something that may make a session more comfortable or more productive, rather than the thing that resolves the problem. That is not a reason to refuse ultrasound if it helps your symptoms. It is a reason to be sceptical of anyone selling either machine as a cure on its own.

Neither machine replaces loading

Here is the part nobody wants to hear. Tendons improve mostly through graded, progressive loading: structured exercise that gradually asks more of the tissue until it can handle what you need it to do. Shockwave and ultrasound can reduce pain enough to let you load properly, and that is genuinely valuable. Neither one builds tendon capacity. If a treatment plan is entirely passive, something important is missing from it.

What affects the cost

Cost varies with the clinic, the number of sessions, whether assessment and exercise prescription are included in the session, and whether your medical aid contributes from a day-to-day benefit. Shockwave is usually a short course of sessions spaced about a week apart; ultrasound is normally folded into a standard consultation. Before committing, ask what the quoted figure includes, how many sessions are expected before someone reviews whether it is working, and what the plan is if it is not. Benefits differ enormously between schemes and options, so check your own rather than relying on what a friend was covered for.

Common questions

Does shockwave therapy hurt?

It is uncomfortable, and most so directly over the sorest point, which is usually a sign we are in the right place. The intensity is adjustable and we work within what you can tolerate. Most people describe it as sore during and slightly tender for a day afterwards.

How many sessions will I need?

Shockwave is normally a short course spaced roughly a week apart, with a proper review to see whether anything has changed. If a reasonable trial has not shifted your symptoms, the right answer is to change the plan rather than keep buying sessions.

Is there anyone who should not have these treatments?

Yes. There are situations where neither is appropriate, including some implanted devices, pregnancy, active infection, bleeding or clotting disorders, and treating directly over a tumour. Tell me what is going on medically before we start, because it changes what I would use.

Book with Justin

If you have had heel, Achilles or elbow pain for months and nothing is shifting it, book an assessment with Justin Muller at Peak Movement in central Cape Town. We will work out whether shockwave is the right tool for your problem, and what loading programme needs to sit alongside it.