Do hypokyphotic adolescent idiopathic scoliosis patients treated with Ponte osteotomy obtain a better clinical efficacy? A preliminary retrospective study

Table 3 Radiographic parameters comparison among preoperative and postoperative follow-up in Ponte Group

Parameters	Preoperative	Immediate postoperative	3 month postoperative	1 year postoperative	2 year postoperative	Pre versus Im-post	Im-post versus 3 m-post	3 m-post versus 1y-post	1y-post versus 2y-post
PT (°)	25.55 ± 3.69	12.98 ± 2.71	13.18 ± 2.58	14.08 ± 2.30	14.43 ± 2.58	< 0.001	0.518	0.004	0.289
MT (°)	48.10 ± 3.93	13.90 ± 3.23	13.00 ± 2.61	14.48 ± 3.20	15.18 ± 2.84	< 0.001	0.012	< 0.001	0.083
TL/L (°)	22.40 ± 4.32	8.03 ± 4.01	8.53 ± 2.97	9.53 ± 2.68	7.60 ± 2.23	< 0.001	0.215	< 0.001	< 0.001
CB (mm)	− 13.20 ± 13.73	− 19.10 ± 12.48	− 11.48 ± 8.53	− 8.80 ± 7.77	− 9.18 ± 9.48	0.002	< 0.001	0.006	0.756
RSH (mm)	− 7.23 ± 12.45	− 13.03 ± 11.18	− 5.10 ± 8.00	− 4.85 ± 6.78	− 4.53 ± 7.19	0.004	< 0.001	0.677	0.638
CSA (°)	4.48 ± 6.80	5.08 ± 6.36	3.93 ± 7.04	2.23 ± 7.64	1.08 ± 6.74	0.507	0.125	0.020	0.081
TK (°)	5.30 ± 3.18	21.68 ± 3.62	23.38 ± 3.20	24.00 ± 3.52	24.23 ± 2.71	< 0.001	0.013	0.191	0.618
LL (°)	− 36.15 ± 4.44	− 40.08 ± 5.21	− 40.95 ± 3.93	− 42.38 ± 3.51	− 42.98 ± 5.21	< 0.001	0.105	0.009	0.132
SVA (mm)	− 16.20 ± 11.42	− 22.95 ± 8.72	− 12.18 ± 9.39	− 6.40 ± 9.71	− 7.93 ± 10.08	0.006	< 0.001	0.052	0.447

PT proximal thoracic, MT main thoracic, TL/L thoracolumbar/lumbar, CB coronal balance, RSH radiographic shoulder height, CSA cervical sagittal alignment, TK thoracic kyphosis, LL lumbar lordosis, SVA sagittal vertical axis
Statistically significant values were bolded

ISSN: 1749-799X