Groot, I.B. de

patient activity study osteoarthritis group subscale questionnaire outcome score surgery arthroplasty health function dutch effect validity knee arthroplasty patient satisfaction koos questionnaire correlation month capacity factor control measure dutch version satisfaction version level result measurement osteoarthritis outcome score knee oa patients domain stam hj womac scale oa patients table -36 6 months quality reliability sport relationship limitation ceiling effects validation number population difference chapter knee injury analysis movement self-reported expectation revision outcome measures disability bussmann patient group change role limitations symptom patient groups problem stiffness replacement performance hip arthroplasty sf -36 percentage hip oa body function hypotheses bussmann jb determinant injury aspect