Treatments for rheumatoid arthritis (RA) have improved since methotrexate and biological agents were approved; however, few longitudinal analyses have tracked joint destruction, deformity progression, or functional impairments that directly affect the activities of daily living. Due to the consequences of functional impairments, we conducted this study to glean more information regarding deformity progression over time.
This study enrolled 134 hands in 67 RA patients with hand deformities in 2004. After 5 years, 100 hands in 52 patients were eligible for the final assessment. Analyses consisted of morphological and radiographical evaluations of deformities, functional evaluations by questionnaires and the modified Kapandji index, and activity evaluations.
In this period, the type I deformity (Nalebuff and Millender, Orthop Clin North Am 6(3):753-63, 1975) was the most common thumb deformity. Swan-neck and boutonnière finger deformities also progressed. At the 5-year follow-up, questionnaire score worsened, when disease activity was high.
Our study showed that there was a marked progression in hand deformities in RA patients over a 5-year period. In order to assist RA patients in performing the activities of daily living, medical and rehabilitative interventions should target the restoration of functional loss through joint destruction as well as the prevention of disease progression.