28 randomized controlled trials assessing the effect of exercise interventions on the walking ability of patients with knee osteoarthritis were included in this meta-analysis. The purpose of this study was to quantitatively compare exercise therapy to a control group receiving no intervention or psychoeducational interventions (in terms of total distance walked, amount of time spent walking, and gait speed). The results displayed that the exercise intervention significantly improved total distance walked, the amount of time spent walking, and gait velocity when compared to control. It was noted that the level of evidence varied from 'very low' to 'moderate' on GRADE quality assessments.