Table 4.

Radiographic parameters in the frailty and non-frailty groups

	Frailty group (n = 47)	Non-frailty group (n = 114)	p value
Pre-operative Cobb (°)	37.28 ± 4.21	36.11 ± 4.56	0.135
Cobb at follow-up (°)	10.49 ± 1.35	10.05 ± 1.92	0.157
Pre-operative CVA (mm)	40.45 ± 9.95	41.29 ± 10.42	0.637
CVA at follow-up (mm)	10.74 ± 5.64	10.12 ± 5.79	0.533
Pre-operative PI-LL (°)	30.30 ± 4.00	29.77 ± 5.04	0.525
PI-LL at follow-up (°)	10.06 ± 2.69	9.91 ± 3.07	0.768
Pre-operative SVA (mm)	72.13 ± 43.89	75.61 ± 30.45	0.565
SVA at follow-up (mm)	23 ± 16.63	20.41 ± 15.23	0.342

PI-LL pelvic incidence minus lumbar lordosis, CVA coronal vertical axis, SVA sagittal vertical axis