Table 3.

Secondary outcome

	Femoral block	LIA
Total morphine (mg)	32 (23–41)	24 (16–31)
Total morphine (mg/kg)	0.4 (0.3–0.5)	0.3 (0.2–0.4)

Total morphine refers to intravenous morphine administered via a PCA in 24 h. Data are expressed as mean (95% CI).