Frequently Asked Questions  Pulsed Shortwave Diathermy

What is pulsed shortwave diathermy (PSW)?

Pulsed shortwave diathermy (PSW) delivers electromagnetic energy in controlled pulses to deep body tissues. Unlike continuous shortwave diathermy, the pulsed mode generates a non-thermal or mildly thermal effect, reducing the risk of surface heating while still promoting tissue repair, reducing inflammation, and managing pain. It is widely used in physiotherapy and musculoskeletal rehabilitation settings.

What conditions is pulsed shortwave therapy used for?

PSW therapy is used for musculoskeletal pain, soft tissue injuries, arthritis, post-surgical rehabilitation, chronic inflammation, wound healing, and peripheral nerve injuries. It is commonly applied in physiotherapy clinics, sports medicine centres, and NHS rehabilitation units.

What is the difference between pulsed and continuous shortwave diathermy?

Continuous shortwave diathermy produces a sustained electromagnetic field that generates significant heat in deep tissues, useful for muscle relaxation and chronic conditions. Pulsed shortwave delivers electromagnetic energy in short bursts with rest intervals, producing a sub-thermal or athermal effect that promotes cellular repair and reduces inflammation without excessive heating. This makes PSW the preferred choice for acute injuries and post-operative care.

Is pulsed shortwave diathermy safe?

When used by a trained physiotherapist or clinician and applied according to the manufacturer's guidelines, pulsed shortwave diathermy is considered safe and well-tolerated. Key contraindications include implanted metallic devices (e.g. pacemakers, metal implants in the treatment area), pregnancy, active malignancy, and active bleeding. Always follow clinical protocols and refer to your device's Instructions for Use.

Does Trimbio supply pulsed shortwave equipment to the NHS?

Yes. Trimbio is a proud supplier of physiotherapy and rehabilitation equipment to NHS Trusts across the United Kingdom. We provide professional servicing and repair support in addition to our equipment range. Contact us to discuss institutional procurement requirements or to request a quote.

Not sure which pulsed shortwave diathermy unit is right for your practice? Our team is here to help. Contact Trimbio on 01403 597 597 or use the quote request form to discuss your clinical requirements, budget, and installation needs. We also offer reconditioned PSW equipment for cost-conscious clinics, and a trade-in programme for existing units.