Overall 12.1% of the participants (19.7% of those with hand OA versus 10.0% of those without) developed hip or knee OA (odds ratio [OR] 2.1 [95% confidence interval (95% CI) 1.3-3.1]). Subjects with hand OA had an increased risk of future hip OA (OR 3.0 [95% CI 1.6-5.4]), which was further increased in those with a family history of OA. Subjects with hand OA had an OR of 1.6 [95% CI 1.0-2.8) for the future development of knee OA, which was further increased in those who were overweight