Posterior and postero-lateral incidental durotomy during lumbar spine surgery: primary repair versus augmented primary repair

Egyptian Journal of Neurosurgery

Table 2 operative variables of the studied groups

	Primary repair Group (A)	Augmented repair Group (B)	χ²	P
	N = 34	N = 34	χ²	P
No of operated levels
Mean ± SD	2.32 ± 0.88	1.97 ± 1.14	Z (-1.633)	0.102
Extent of dural tear
0–2 cm	14 (41.7%)	28 (82.3%)
> 2 cm	20 (58.3%)	6 (17.7%)	12.205	< 0.001**
Post-op immobilization
Mean ± SD	1.469 ± 0.57	1.5 ± 0.3	t (-0.281)	0.78