[Retracted] Controlled Hypotension Combined with Femoral Nerve Block for Knee Replacement without Tourniquet

Table 2

Comparison of VAS scores of four groups of patients at rest and at different time points.

Status	Group	Number of cases	The day before surgery	1 day after surgery	2 days after surgery	3 days after surgery	7 days after surgery	3 months after surgery
At rest	1	28	1.1 ± 0.2	4.5 ± 1.5	3.8 ± 0.8	2.4 ± 0.1	1.4 ± 0.3	0.7 ± 0.3
	2	30	1.2 ± 0.1	2.3 ± 0.2	22 ± 0.5	2.5 ± 0.1	1.3 ± 0.4	0.5 ± 0.4
	3	28	1.4 ± 0.2	2.5 ± 0.2	2.4 ± 0.5	2.6 ± 0.2	1.4 ± 0.4	0.3 ± 0.2
	4	39	1.5 ± 0.2	2.5 ± 0.5	2.6 ± 0.2	2.3 ± 0.5	1.8 ± 0.2	0.8 ± 0.2
When active	1	28	1.7 ± 0.4	4.3 ± 1.5	4.5 ± 1.2	3.0 ± 0.1	1.3 ± 0.3	0.4 ± 0.2
	2	30	1.8 ± 0.3	3.4 ± 1.4	3.1 ± 1.0	2.9 ± 0.5	1.7 ± 0.5	0.9 ± 0.3
	3	28	2.1 ± 0.4	4.8 ± 1.1	4.2 ± 0.5	2.8 ± 0.8	1.9 ± 0.5	1.0 ± 0.3
	4	39	2.0 ± 0.3	3.1 ± 1.4	2.0 ± 0.8	2.6 ± 0.5	1.2 ± 0.8	0.7 ± 0.1