Surgical correction for adult spinal deformity increases acetabular lateral coverage of femoral heads

Table 3 The changes of spinopelvic parameters after ASD correction

	Value mean ± SD	P		Value mean ± SD	P
Sagittal parameters
SVA (cm)			LL (°)
Preop	13.6 ± 6.4		Preop	15.4 ± 14.5
Po 1Y	3.7 ± 2.2	< 0.001*	Po 1Y	− 44.4 ± 7.7	< 0.001*
SS (°)			PT (°)
Preop	22.0 ± 9.0		Preop	32.9 ± 8.1
Po1Y	32.4 ± 8.7	< 0.001*	Po 1Y	20.4 ± 5.7	< 0.001*
TK (°)			PI (°)
Preop	13.1 ± 11.7		Preop	53.9 ± 9.0
Po 1Y	26.5 ± 8.7	< 0.001*	Po 1Y	54.2 ± 9.0	0.143
TLK (°)			PI-LL (°)
Preop	8.6 ± 12.1		Preop	37.1 ± 16.2
PO 1Y	7.5 ± 8.2	0.458	Po 1Y	9.6 ± 5.5	< 0.001*
Coronal parameters
CB(mm)			PO (°)
Preop	10.3 ± 8.6		Preop	1.0 ± 0.9
Po 1Y	3.6 ± 2.8	< 0.001*	Po 1Y	0.6 ± 0.6	0.002*

Preop Preoperative, Po 1Y 1-year postoperative, SVA Sagittal vertical axis, SS Sacral slope, TK Thoracic kyphosis, TLK Thoracolumbar kyphosis, LL Lumbar lordosis, PT Pelvic tilt, PI Pelvic incidence, CB Coronal balance, PO Pelvic obliquity, SD Standard deviation.
The data in the table are presented as the mean ± SD.
P, Comparison between preoperative and postoperative outcomes using paired t test.
* Statistically significant (p < 0.05)

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