Table 2.

Comparison of clinical outcomes after simultaneous bilateral TKA in both groups.

	Opioid-based group (N = 28)	Opioid-sparing group (N = 28)	P values
VAS score (0–10 points)
Post-op 6 h, at rest	3.18 ± 3.06	2.36 ± 2.33	0.263
Post-op 12 h, at rest	3.44 ± 2.04	2.57 ± 1.48	0.074
Post-op 24 h, at rest	1.89 ± 2.04	1.92 ± 1.94	0.947
Post-op 24 h, with movement	5.18 ± 2.47	3.68 ± 2.48	0.027*
Post-op 48 h, at rest	1.36 ± 2.16	1.54 ± 1.69	0.732
Post-op 48 h, with movement	4.50 ± 2.19	3.57 ± 2.18	0.118
Post-op 72 h, at rest	1.64 ± 1.77	1.07 ± 1.44	0.190
Post-op 72 h, with movement	4.93 ± 2.23	3.50 ± 1.80	0.011*
Cumulative morphine dose (mg)
Post-op 24 h	20.99 ± 7.97	3.14 ± 2.62	< 0.001*
Post-op 48 h	35.05 ± 12.46	4.21 ± 3.68	< 0.001*
Post-op 72 h	45.69 ± 16.32	4.75 ± 4.33	< 0.001*
Continuous passive motion (°)
Post-op 24 h	89.07 ± 10.56	93.21 ± 9.83	0.135
Post-op 48 h	104.64 ± 8.39	108.79 ± 8.15	0.066
Post-op 72 h	114.46 ± 6.57	114.92 ± 5.72	0.779
Satisfaction rate (0–100 points)	77.22 ± 13.75	87.46 ± 10.09	0.003*

*p < 0.05.