Factors Associated With Hand and Upper Arm Functional Disability in People With Rheumatoid Arthritis: A Systematic Review.

Although the level of evidence was limited, modifiable factors such as grip strength, disease activity, and pain were identified as the most influential factors on hand function in people with RA. The findings of the present review indicate that important sociodemographic factors that impact hand function in individuals with RA have not yet been considered or reported in clinical research.