Patient centred outcomes in osteoarthritis

The introduction of the minimal clinically important improvement, and of the patient acceptable symptom state is a major step forward in outcome research in OA. Before we can use this new set of measurements in daily practice, it is evident that these instruments need further validation and perhaps modification. The knowledge thus obtained will certainly help us to better understand and appreciate findings from OA research, but in the end, for the patient it all comes down to the most relevant questions: Do you feel good? Do you feel improved? Is this treatment worthwhile?