Electrical Muscle Stimulation Added to a Knee Brace Shows Limited Additional Benefit for Osteoarthritis

Knee osteoarthritis involves progressive changes in joint cartilage and surrounding tissues. It can cause pain, stiffness and difficulty walking, climbing stairs or standing from a chair. Non-surgical management commonly includes exercise, physiotherapy, weight management where appropriate, pain relief and selected supportive devices.

The pilot randomised trial investigated whether adding gait-triggered neuromuscular electrical stimulation to an unloading knee brace could improve symptoms and movement. Electrical stimulation activates muscles through controlled impulses, while an unloading brace is designed to reduce pressure on the affected part of the knee.

Of the 28 participants initially randomised, 23 completed the intervention. Researchers did not find a significant difference between the groups in the main measure of overall knee function. The stimulation group did show a modest improvement in pain, alongside some changes in muscle activation and balance-related measures.

Because the trial was small and short, the findings should be considered preliminary. They do not establish that electrical stimulation is superior to standard bracing or that it can reverse osteoarthritis. Larger trials are needed to determine which patients, if any, benefit most.

People with persistent knee pain should discuss suitable treatment options with an orthopedist or physiotherapist rather than buying or using electrical stimulation devices without guidance.