Significant treatment and time effects were seen in WOMAC pain ( 7.0 [ .46 ] , 5.4 [ .54 ] ; p = .03 ) , function ( 24.5 [ 1.8 ] , 19.9 [ 1.6 ] ; p = .01 ) and total scores ( 35.4 [ 2.3 ] , 28.6 [ 2.1 ] ; p = .01 ) from 4 to 20 weeks .