Table 2 Eligibility criteria

Inclusion criteria

 Registered with a primary care practice

  ≥ 80 years of age

 Knee and/or hip osteoarthritis. GP register check (hip/knee osteoarthritis diagnosis recorded) or self-report of knee or hip joint pain lasting 3 months or longer AND knee or hip joint pain on most days of the past month

  ≥ 1 comorbidity. GP register check and/or self-report

 Individual is willing and able to give informed consent for participation in the study

Exclusion criteria

 Has a terminal condition with a life expectancy of less than 6 months or under palliative care

 Any substantial health or social concern that, in the opinion of the inidividual’s GP, would place the individual at increased risk or inability to participate including known inability to provide informed consent

 Significant cognitive impairment. GP check and/or assessed by research clinician. Eligibility screen includes the 6-item Cognitive Impairment Test (score of 8 or more are ineligible)

 Unable to walk 3 m with or without an aid

 Presents with signs of serious pathology requiring immediate referral for investigations

 Unable to follow verbal or written instructions including inability to follow simple safety instructions