ArticleJournal of rehabilitation and assistive technologies engineering
Comparing the effect of off-loading knee brace with and without local muscle vibration on clinical and biomechanical outcomes in patients with medial knee osteoarthritis: A randomized clinical trial.
Article in Journal of rehabilitation and assistive technologies engineering. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Background: Medial knee osteoarthritis (KOA) is a prevalent degenerative joint disease causing pain and functional impairment. Off-loading knee braces reduce pain but may decrease muscle activity, leading to weakness. Integrating local muscle vibration (LMV) into off-loading braces may enhance muscle activation and clinical outcomes. Objective: To design a portable LMV system synchronized with gait phases and compare its efficacy to a conventional off-loading brace in patients with medial KOA. Methods: In this randomized clinical trial, 16 patients with medial KOA were assigned to either an LMV-equipped off-loading brace group or a conventional brace group for 4 weeks. Clinical outcomes (Western Ontario and McMaster Universities Osteoarthritis Index [WOMAC], Visual Analog Scale [VAS]) and biomechanical parameters (knee adduction moment [KAM1, KAM2], impulse, range of motion [ROM], cadence, stride length) were assessed pre- and post-intervention using validated questionnaires and a motion analysis system. Results: The LMV-equipped brace group demonstrated a significantly greater reduction in KAM impulse (-24.79% vs. -7.68%, p=0.050) and improved knee ROM (p=0.048) compared to the conventional brace group. Significant improvements in WOMAC (p=0.001) and VAS (p=0.011) scores were observed in the LMV group, indicating enhanced functional status and pain relief. Conclusion: The LMV-equipped off-loading brace provides superior biomechanical (KAM impulse, ROM) and clinical outcomes compared to conventional braces, offering a promising intervention for medial KOA.
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