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Br J Gen Pract. 2011 Aug;61(589):e452-8. doi: 10.3399/bjgp11X588411.

Activity Increase Despite Arthritis (AÏDA): phase II randomised controlled trial of an active management booklet for hip and knee osteoarthritis in primary care.

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  • 1Department of Primary Care and Public Health, School of Medicine, Cardiff University, Cardiff, UK.



The Hip & Knee Book: Helping you cope with osteoarthritis was developed to change disadvantageous beliefs and encourage physical activity in people with hip or knee osteoarthritis.


To assess the feasibility of conducting a definitive randomised controlled trial (RCT) of this evidence-based booklet in people with hip or knee osteoarthritis.


Phase II feasibility randomised controlled trial (RCT).


Computerised searches of patients' record databases identified people with osteoarthritis of the hip or knee, who were invited to participate in the RCT comparing the new booklet with a control booklet. Outcomes were measured at baseline, 1 month, and 3 months, and included: beliefs about hip and knee pain, exercise, and fear avoidance; level of physical activity; and health service use.


The trial methods were feasible in terms of recruitment, randomisation, and follow-up, but most participants recruited had longstanding established symptoms. After one and 3 months, there was a small relative improvement in illness, exercise, and fear-avoidance beliefs and physical activity level in The Hip & Knee Book group (n = 59) compared with the control group (n = 60), which provides some proof of principle for using these outcomes in future trials.


This feasibility study provided proof of principle for testing The Hip & Knee Book in a larger definitive RCT.

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