Comparisons: Compare gait biomechanics in people with symptomatic unilateral hip OA while walking with and without a cane at baseline and after 4 weeks of cane use. Compare gait biomechanics in people with symptomatic unilateral hip OA with and without a cane to those of healthy, age-matched controls. Compare pain and health-related quality of life in people with symptomatic unilateral hip OA following 4 weeks of cane use. Determine the association between changes in gait biomechanics, pain, and health-related quality of life in people with symptomatic unilateral hip OA following 4 weeks of cane use.