Efficacy of low level laser therapy associated with exercises in knee osteoarthritis: a randomized double-blind study
2012
Objectives: To estimate the effects of low level laser therapy in combination with a programme of exercises on pain, functionality, range of motion, muscular strength and quality of life in patients with osteoarthritis of the knee.Design: A randomized double-blind placebo-controlled trial with sequential allocation of patients to different treatment groups.Setting: Special Rehabilitation Services.Subjects: Forty participants with knee osteoarthritis, 2–4 osteoarthritis degree, aged between 50 and 75 years and both genders.Intervention: Participants were randomized into one of two groups: the laser group (low level laser therapy dose of 3 J and exercises) or placebo group (placebo laser and exercises).Main measures: Pain was assessed using a visual analogue scale (VAS), functionality using the Lequesne questionnaire, range of motion with a universal goniometer, muscular strength using a dynamometer, and activity using the Western Ontario and McMaster Universities Osteoarthritis (WOMAC) questionnaire at thr...
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