Table 3 Eligibility criteria assessed by the research nurse at the baseline nurse clinical assessment

Participants will be randomised to the trial if they meet the following criteria at the baseline nurse clinical assessment:

   • Give informed consent to participate in the trial

   • Meet the ACR criteria for features of hand OA (symptoms previously assessed on health survey) or have unilateral or bilateral thumb base OA

   • Do not have a clinical "red flag" indicative of potentially serious pathology

   • Able to attend OT classes