[RESULTS] All variables showed improvement reaching the following values ( from baseline to 1y ) G2 : PHS : 57.72 ( baseline : 41.17 ; ( improvement : 16.55 % ) , MHS : 74.51 ( baseline : 47.46 , 27.05 % ) , HRQoL 0.90 ( baseline : 0.72 , 18 % ) ) , HRQoL-VAS 84.29 ( baseline : 58.04 , 26.25 % ) , RMQ 4.15 ( baseline : 7.85 , 15.42 % ) , NDI 3.96 ( baseline : 21.87 , 35.82 % ) , WOMAC 7.17 ( baseline : 25.51 , 19.10 % ) .