VAS and HSS scores
Before treatment, VAS score and HSS score had no significant differences between the two groups (P>0.05). Observation group had a significantly lower VAS score and a higher HSS score than control group after treatment (P<0.05). Besides, the VAS score declined and HSS score rose in both groups after treatment compared with those before treatment (P<0.05) (VAS and HSS scoresP<0.05 P<0.05 