Repetitive transcranial magnetic stimulation as an adjunct to quadriceps strengthening exercise in knee osteoarthritis: a pilot randomised controlled trial.
Wei-Ju Chang, Alan Chiang, Nahian Chowdhury, Sam Adie, Justine M Naylor, Harrison Finn, Rodrigo R N Rizzo, Edward Gorgon, Edel O'Hagan, Siobhan M Schabrun
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Abstract
Objective: To examine the feasibility, safety and perceived patient response of a combined repetitive transcranial magnetic stimulation (rTMS) and quadriceps strengthening exercise intervention for knee osteoarthritis.
Methods: A two-arm, participant-blinded, therapist-blinded and assessor-blinded, randomised controlled trial with additional follow-up of pain and function at 3 months. Participants were randomised to receive active rTMS+exercise (AR+EX) or sham rTMS+exercise (SR+EX) twice weekly for 6 weeks while completing home exercises twice a week. Primary outcomes included recruitment rate, treatment attendance, dropouts, willingness to undergo therapy (11-point Numeric Rating Scale, 'not at all willing'=0 and 'very willing'=10), success of participant, therapist and outcome assessor blinding, adverse events and Global Perceived Effect Scale. Secondary outcomes were pain, function and measures of physiological mechanisms.
Results: 86 people were screened, 31 (36%) were randomised, 28 (90%) completed the treatments and 3 (10%) dropouts at 3-month follow-up. Both groups had high treatment attendance (98.4% and 100%). All participants scored at least 7 on the willingness to undergo therapy scale. Blinding was successful. No adverse events were reported. At the postintervention assessment, 80% in the AR+EX group and 75% in the SR+EX group reported an improvement on the Global Perceived Effect Scale. Both groups demonstrated within-group improvements in pain at the postintervention assessment but not at the 3-month follow-up. Function improved only in the AR+EX group at the postintervention assessment.
Conclusions: Combined rTMS and quadriceps strengthening exercise intervention for knee osteoarthritis is feasible, safe and well-received. A full-scale trial is justified to assess the clinical benefits of this novel treatment.
期刊介绍:
BMJ Open is an online, open access journal, dedicated to publishing medical research from all disciplines and therapeutic areas. The journal publishes all research study types, from study protocols to phase I trials to meta-analyses, including small or specialist studies. Publishing procedures are built around fully open peer review and continuous publication, publishing research online as soon as the article is ready.