A comparative study between continuous epidural analgesia, ultrasound guided continuous femoral nerve block (CFNB), and ultrasound guided continuous adductor canal block (ACB) for post-operative pain management after total knee replacement (TKR)

Ain-Shams Journal of Anesthesiology

Table 2 Comparison between the three groups as regard the VAS score

	Group A (n=20)		Group B (n=20)		Group C (n=20)		A Vs B	A vs C	B vs C	P value
	Median	IQR	Median	IQR	Median	IQR	Mann Whitney U test
VAS 0 hr	1	1 (0-1)	1	1 (1-2)	2	1 (1-2)	0.01	0.001	0.285	0.001
VAS 1 hr	1	1 (1-2)	2	1(1-2)	2	1(2-3)	0.038	0.001	0.15	0.001
VAS 6 hrs	1	0(1-1)	2	1(1-2)	2	0(2-2)	0.007	<0.001	0.84	<0.001
VAS 12 hrs	1	1(0-1)	2	2(1-2)	2	0(2-2)	<0.001	<0.001	0.177	<0.001
VAS 24 hrs	1	0(1-1)	2	1(1-2)	2	0(2-2)	<0.001	<0.001	0.512	<0.001
VAS 36 hrs	1	1(0-1)	2	1(1-2)	2	0(2-2)	<0.001	<0.001	0.317	<0.001
VAS 48 hrs	1	0(1-1)	2	1(1-2)	2	1(1-2)	<0.001	<0.001	0.41	<0.001

Data are presented as median ±SD
VAS score was used to compare the three groups regarding postoperative pain control and was assessed at regular intervals (at PACU, 1hr,6hrs, 12hrs, 24hrs, 36hrs, and 48 hrs). The epidural group showed better pain control and lower VAS scores than both the femoral and adductor groups
IQR Inter quartile range, VAS Visual Analogue Scale
P<0.05 was considered statistically significant