Osteoarthritis (OA) is a common chronic condition characterized by joint pain and stiffness, and decreased function. Individuals with OA may experience a number of challenges as a consequence of their symptoms, including disability and diminished quality of life. Typically OA affects older people, and coexists with other conditions associated with aging and obesity (e.g. cardiovascular disease, diabetes), as well as with sensory (e.g. poor vision) and psychosocial problems (e.g.