Perioperative complications after surgical treatment in degenerative adult de novo scoliosis

Table 3 Postoperative complications and re-operations

	1		2		3		4		5	6	7
	Total		Early complications (< 30 d)		Late complications (> 30 d)		No complications		p-value ^(3–2)	p-value ^(4–2)	p-value ^(4–3)
	n = 92	%	n = 23	%	n = 49	%	n = 20	%
Wound healing defects	17	18.4	12	52.1	5	10.2	0	0	< 0.01	< 0.01	0.14
Wound dehiscence, delayed healing	10	10.9	6	26	4	8.2	0	0	< 0.05	< 0.05	0.18
Superficial infection	7	7.6	6	26	1	2.0	0	0	< 0.01	< 0.05	0.53
Operation due to wound healing defects	13	14.1	11	47.8	2	4.1	0	0	< 0.01	< 0.01	0.37
Postoperative Paresis	13	14.1	6	26	7	14.3	0	0	0.23	< 0.05	0.08
Epidural hematoma	6	6.5	5	21.7	1	2.0	0	0	< 0.01	< 0.05	0.53
Re-Operation	6	6.5	5	21.7	1	2.0	0	0	< 0.01	< 0.05	0.53
Dural leak	7	8.7	1	5.2	6	14.6	0	0	0.30	0.31	0.07
Re-Operation	1	1.2	1	5.2	0	0	0	0	0.14	0.31	–
Adjacent segment failure Total (n)	33	35.8	12	52.1	21	42.9	0	0	0.47	< 0.01	< 0.01
Adjacent segment failure during hospital stay	8	8.7	8	34.8	0	0	0	0	< 0.01	< 0.01	–
Re-Operation	8	8.7	8	34.8	0	0	0	0	< 0.01	< 0.01	–
Adjacent segment failure later on	25	27.2	4	17.4	21	42.8	0	0	< 0.01	< 0.01	< 0.01
After how many months	9.3 ± 6.3		6.7 ± 8.0		9.85 ± 6.1		0		0.19	< 0.01	< 0.01
Re-Operation	22	23.9	3	13.0	19	38.7	0	0	< 0.01	< 0.05	< 0.01

Statistical analyses regarding p-values were performed between the three columns/groups, i.e. early complications (2), late complications (3) and no complications (4); see superscripted numbers (significance at p < 0.05 or at p < 0.01)

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