Non-consultation among community-dwelling older adults with knee pain: completing the picture

Aim: To investigate knee-related and comorbid consultations in a sample of community- dwelling older adults with knee pain. Background: Knee pain affects 25–37% of people aged over 50 years. Previous studies suggest aminority will consult their general practitioner (GP) about it. One reason might be the relatively low priority given to this problem in the context of multi-morbidity. Methods: Adults aged over 50 years, registered with three local general practices reporting knee pain within the last 12 months, were recruited to an observational cohort. Consultation data were reviewed for the three-year period following study entry. All knee-related consultations, including those for knee osteoarthritis (OA), were identified. Contacts for non-knee-related morbidity were also identified. Consultation patterns were summarized as incidence rates using exact person–time and cumulative incidences. Findings: Seven hundred and forty-two people (mean age 65.5 years (SD 8.6); 54% female) were included and provided 1917 person–years of observation. The rate of knee-related consultations was 38.5 per 100 person–years (95% CI 35.8, 41.3), of knee OA consultations 10.6 (9.2, 12.1), and of comorbid contacts 790.6 (778.0, 803.3). The cumulative incidence of knee-related consultation at three years was 41.0%. Knee-related consultation was related to severity of knee pain but almost 50% with high levels of pain intensity did not visit the GP about their knee problem. Contrastingly, within sixmonths of study entry 85.6% of participants had contacted the practice about other comorbid illness (predominately circulatory disease or other musculoskeletal complaints). By three years, 99.6% participants had consulted about comorbid illness. Incidence rates for knee-related consultations and comorbid contacts were associated with the relative importance the patient gave to their knee problem. For every knee-related consultation there were 20 comorbid contacts. There is considerable scope for opportunistic care of knee pain and for further research on how patients and GPs prioritize health conditions in the context of multi-morbidity.