Arthritis and the process of disablement.

Rheumatoid arthritis and osteoarthritis are two medical conditions that broadly alter the musculoskeletal system and influence a person's ability to perform the functional activities and tasks expected of an independent adult. A burgeoning literature depicts the process of disablement in arthritis and details the relationships among disease, impairments, and functional limitations. There is, however, a substantial gap in the physical therapy literature regarding the relationship among arthritis, musculoskeletal impairment, and physical function. Furthermore, the search for the most effective ways to remediate musculoskeletal impairment and improve function remains a challenge for clinicians and researchers alike.