In 40 seconds
Steroid injections give fast, dramatic short-term pain relief — but accelerate cartilage and tendon breakdown with repeated use. PEMF therapy gives gradual cumulative pain reduction without the tissue cost. For chronic conditions like knee OA, frozen shoulder, tendinopathy, and bursitis, PEMF often produces equivalent or better long-term outcomes than steroid alone. Many patients combine the two — steroid for fast relief, PEMF to support healing during the relief window.
| Steroid injection | PEMF therapy | |
|---|---|---|
| Speed of relief | Days | 2–6 weeks |
| Duration of effect | Weeks to months | Cumulative, often lasting |
| Mechanism | Suppresses inflammation | Reduces inflammation + supports tissue repair |
| Tissue cost | Long-term cartilage/tendon weakening | None established |
| Frequency limit | 2–3 injections per year per site | None — used long-term |
| Cost | £200–£500 private | £25–£75 per session |
| Best for | Severe acute pain, short-term function | Chronic conditions, healing-focused use |
When steroid still makes sense
Steroid injection is the right choice when: severe acute pain is preventing function or sleep; quick relief needed before a planned event; first-line trial in a clearly inflammatory joint condition.
When PEMF is the better choice
PEMF is preferred when: chronic condition you're managing long-term; tendon problem (steroid + tendon = bad mix); already had multiple steroid injections at the site; want to avoid medication side effects; want healing support, not symptom suppression.
Frequently asked questions
Is PEMF as effective as a steroid injection?
Different timeframes. Steroid injection produces fast, dramatic short-term pain relief — usually within days. PEMF produces gradual cumulative pain reduction over weeks. For chronic conditions, PEMF often produces equivalent or better long-term outcomes without the tissue cost.
Why are steroid injections limited to 2–3 per year?
Repeated steroid injections weaken cartilage, tendon, and supporting tissue. Multiple injections in the same site accelerate joint degeneration and increase tear/rupture risk for tendons. The 2–3 per year limit exists for safety.
Can I have both?
Yes. Many patients have a steroid injection for fast relief, then start PEMF to support healing during the relief window. The combination often works better than either alone.
Should I try PEMF first or steroid first?
Depends on severity. Severe acute pain that's stopping you functioning — steroid often makes sense for fast relief. Chronic moderate pain — start with PEMF and see if you can avoid the injection.
Looking for a PEMF clinic near you?
We list every credible PEMF therapy provider in the UK so you can find one near home.