In 40 seconds
Upper-limb motor recovery is where stroke rTMS has its strongest published evidence. Lefaucheur 2020 European guideline gives Level A (definite efficacy) for low-frequency contralesional M1 rTMS in subacute stroke for upper-limb motor function. The Hsu 2012 meta-analysis (20 RCTs / n=478) reported SMD 0.55 favouring rTMS. The interhemispheric-competition model (Murase 2004) provides the theoretical basis: suppress the over-active contralesional M1 to release the lesioned side. The largest chronic-stroke RCT (NICHE 2018, n=199) was null — 67% active vs 65% sham response. iTBS is showing positive meta signal (Wang 2023). No rTMS device holds FDA or MHRA stroke clearance. UK access is via research trial only — NHS does not commission rTMS for stroke arm recovery.
Quick facts
- Lefaucheur 2020: Level A (definite efficacy) for LF contralesional M1, subacute upper-limb
- Hsu 2012 meta: 20 RCTs / SMD 0.55
- Wang 2023 iTBS meta: Positive on upper-limb FMA scores
- NICHE 2018 (chronic, n=199): Primary endpoint missed (67% vs 65%)
- UK access: Research trial only
- Standard pathway: Constraint-induced movement therapy, task-specific training, mirror therapy
Why subacute timing matters
The strongest rTMS-stroke evidence concentrates in the subacute window (1-6 months post-stroke). This is when cortical reorganisation is most active and contralesional disinhibition begins to limit recovery. The contralesional M1 becomes over-active and inhibits the lesioned side via transcallosal inhibition (Murase 2004). Low-frequency rTMS to the contralesional M1 reduces this inhibition and improves motor function on the affected side. Lefaucheur 2020 grades this Level A — definite efficacy.
The chronic-phase picture is more complex. The NICHE 2018 multisite RCT (n=199, contralesional 1 Hz + occupational therapy vs sham + OT) missed its primary endpoint — 67% of active patients vs 65% of sham achieved minimal clinically important difference. The McDonnell & Stinear 2017 meta reframes the simple interhemispheric model: in patients with severe lesions, the contralesional hemisphere may be supporting rather than inhibiting recovery — suppressing it could be counterproductive. Personalised, lesion-aware protocols may help.
iTBS (intermittent theta-burst) is the modern variant — shorter sessions (~3 min), patterned bursts. Wang 2023 meta-analysis confirmed positive upper-limb effects.
Standard UK stroke rehabilitation pathway (constraint-induced movement therapy, task-specific training, mirror therapy, robot-assisted training, electrical stimulation) remains primary. rTMS sits as research-grade adjunct.
Frequently asked questions
Can rTMS recover my arm after stroke?
In subacute phase (1-6 months), Lefaucheur 2020 gives Level A for LF contralesional M1 rTMS for upper-limb motor recovery. Effects are real but modest at group level. Access in UK is via trial.
Is rTMS available on the NHS for arm recovery?
No. NHS does not commission rTMS for stroke arm recovery. NICE NG236 stroke rehab guideline does not include rTMS as routine.
Will it work if I'm more than 6 months post-stroke?
Chronic phase has weaker evidence. The NICHE 2018 chronic-stroke RCT (n=199) missed its primary endpoint. Some chronic-phase patients may still benefit but effect sizes are smaller.
What about a PEMF mat on my arm?
Consumer PEMF over the arm has no stroke-recovery RCT evidence. Standard rehabilitation remains evidence-based.
Is iTBS better than standard rTMS?
iTBS sessions are much shorter (~3 min vs ~30 min) with comparable or possibly better arm-motor outcomes (Wang 2023 meta).
Can rTMS substitute for physiotherapy?
No. Trials that worked combined rTMS with occupational therapy or task-specific training. rTMS is an adjunct, not a substitute.
Is rTMS safe with post-stroke seizure history?
Higher caution. rTMS-induced seizure risk is ~0.1% in general populations; post-stroke epilepsy adds risk. Detailed history needed.
Where can I access a UK trial?
ClinicalTrials.gov is the registry. UK stroke research centres (Newcastle, Glasgow, Oxford, Manchester, Imperial) recruit periodically.
Related pages
Looking for a PEMF clinic in the UK?
We list every credible PEMF therapy provider in the UK. No UK clinic can legally claim to treat stroke with PEMF or rTMS.