Table 4. Postoperative NRS score.

	6 h		P	24 h		P	48 h		P
	E group	S group		E group	S group		E group	S group
Resting NRS score	1.9±2.1*	0.2±0.4	0.024	1.9±2.1	0.6±1.0	0.090	1.2±1.1	0.4±0.7	0.074
Activity NRS score	2.1±2.0*	0.3±0.6	0.016	2.2±1.9*	0.7±1.2	0.045	1.5±1.2*	0.5±0.8	0.043

E group compared to the S group, *, P<0.05 indicates a significant difference, NRS means numeric rating scales.