The hand is a common site of peripheral joint involvement in osteoarthritis
(OA) and although often underestimated as a cause of disability, the effec
t on quality of life from limitations in performing activities of daily liv
ing such as dressing and feeding may be considerable. Hand OA may also be a
n important indicator of a systemic tendency to OA which may involve weight
bearing joints, notably the hips and knees.' The definition of hand OA, pa
rticularly for epidemiological studies, has undergone reassessment and revi
sion over the last few years. In this paper we examine the issues relating
to this and consider the epidemiology of hand OA. (C) 2000 OsteoArthritis R
esearch Society International.