Forty patients with knee osteoarthritis were randomized to receive either low-level laser therapy (LLLT; n=20) or pulsed electromagnetic field therapy (PEMFT; n=20). Outcomes of interest were pain at rest, during walking, during sitting to stand, and while walking upstairs, all measured using the Visual Analog Scale (VAS). The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) ...