Hybrid kyphoplasty with short-versus intermediate- and long-segment pedicle screw fixations for the management of thoracolumbar burst fractures

Table 3 Comparison among the three types of surgery

Variables	HSS group	IS group	LS group	p-value	Post-hoc test
Variables	(n = 15)	(n = 12)	(n = 16)	p-value	Post-hoc test
Cobb angle
Preoperative	18.90 ± 6.16	19.52 ± 9.39	20.64 ± 7.15	0.808
Postoperative day 1	7.53 ± 7.66	14.49 ± 7.24	13.91 ± 6.61	0.022	NS
End stage of postoperative	10.15 ± 6.80	22.15 ± 7.28	19.54 ± 7.53	< 0.001	HSS < IS, LS
Immediate surgical correction	11.37 ± 6.31	5.03 ± 5.22	6.74 ± 6.71	0.028	HSS > IS
Delayed correction effect	8.75 ± 4.65	−2.63 ± 6.48	1.11 ± 7.15	< 0.001	HSS > IS, LS
Postoperative loss of correction at end stage	-2.61 ± 3.75	-7.66 ± 3.46	-5.63 ± 4.70	0.009	HSS < IS
Implant complications				0.018	HSS < IS
Yes	2	8	6
No	13	4	10

Abbreviation HSS, hybrid short-segment; IS, intermediate-segment; LS, long-segment; NS, not significant

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