Comparison between microendoscopic laminectomy and open posterior decompression surgery for single-level lumbar spinal stenosis: a multicenter retrospective cohort study

Table 2 Comparison of operative data between microendoscopic laminectomy and open groups

	MEL Group	Open Group	p
Operative time (min, range)	76.8 (40–169)	100.9 (47–274)	0.04
Intraoperative blood loss (mL, range)	30.6 (5–250)	144.2(75–700)	0.001
Postoperative hospitalization (days)	9.7	16.5	0.02
Complications (%)
Total	10 (8.2)	9 (7.7)	0.88
Dual tear	8 (6.5)	3 (2.5)	0.21
SSI	1 (0.8)	4 (3.4)	0.16
Hematoma	1 (0.8)	0	0.32
UTI	0	1 (0.8)	0.30
Stroke	0	1 (0.8)	0.30
Revision (%)	1: hematoma (0.8)	2: SSI (1.7)	0.97

MEL, microendoscopic laminectomy, SSI, surgical site infections, UTI, urinary tract infections

ISSN: 1471-2474