Fig. 2

Assessment of treatment and period effects for Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain a and physical function subscales b. Lower scores indicate less knee pain and physical dysfunction. Dotted lines indicate mean values for participants receiving the lateral wedges alone first, followed by the lateral wedges plus arch support; solid lines indicate mean values for participants receiving the lateral wedges plus arch support first, followed by the lateral wedges alone