Linking biomechanics to mobility and disability in people with knee osteoarthritis.

Knee osteoarthritis is the leading cause of chronic disability among community-dwelling adults. The factors resulting in this disability extend beyond pathology. Therefore, understanding disability requires assessment of both pathology and the day-to-day consequences of knee osteoarthritis. This review develops a novel osteoarthritis construct, "careful mobility," by linking qualitative and quantitative methods to study both patient experience and biomechanics.