Postoperative VAS scores, HSS scores and patient satisfaction
The preoperative VAS scores were 5.1 ± 1.4 and 4.9 ± 1.5 in Groups A and B, respectively, which started to drop postoperatively and gradually decreased to 1.3 ± 0.3 and 1.3 ± 0.6 at 3 months postoperatively. The HSS score decreased from 51.2 ± 7.3 and 51.0 ± 9.4 preoperatively to 48.0 ± 8.3 and 45.7 ± 9.0 on postoperative day 1, began to improve on postoperative day 3 and improved to 81.8 ± 7.5 and 82.4 ± 8.1 at follow-up until 3 months after surgery. However, there was no significant difference in the VAS and HSS scores between the 2 groups at each time point. Patient satisfaction was 97.6% and 95.4% in the 2 groups, respectively (