Clinical Comparison of Full-Endoscopic and Microscopic Unilateral Laminotomy for Bilateral Decompression in the Treatment of Elderly Lumbar Spinal stenosis: A Retrospective Study with 12-Month Follow-Up

Figures & data

Figure 1 Complete neural decompression after full-endoscopic unilateral laminotomy for bilateral decompression. (A) Intraoperative endoscopic view of the relaxed neural structure after decompression. (B) Postoperative CT-scan.

Table 1 Baseline Characteristics of the Included Patients

Characteristics	FE Group	Micro Group	P
Age (y), mean (range)	76.09±6.31	72.96±5.85	0.51
Gender (n/%)			0.59
Female	14 (42.4%)	10 (35.7%)
Male	19 (57.6%)	18 (64.3%)
BMI	24.63±2.75	24.96±2.62	0.63
CCI	4.27±1.42	3.86±1.27	0.24
ASA	2.33±0.69	2.50±0.64	0.34
Operative level (n/%)			0.80
L3/4	3 (9.1%)	3 (10.7%)
L4/5	26 (78.8%)	23 (82.1%)
L5/S1	4 (12.1%)	2 (7.1%)
Stenosis grade (n/%)			0.83
B	1 (3%)	1 (3.6%)
C	23 (69.7%)	20 (71.4%)
D	9 (27.3%)	7 (25.0%)

Figure 2 Clinical outcomes preoperatively and at 2-week, 3-month, 6-month, and 12-month postoperatively. (A) VAS for back pain. (B) VAS for radicular leg pain. (C) Oswestry Disability Index (ODI).

Figure 3 Surgical satisfaction rates according to the modified Macnab criteria, excellent or good rate were 87.88% in FE group and 85.71% in Micro group at the 12-month review. There were no significant differences between the groups.

Table 2 The Perioperative Data and Complications

Characteristics	FE Group	Micro Group	P
Opera-Time (minute)	90.33 (87.13,94.75)	72.00 (68.75,74.80)	<0.001
Hospital stay	3.65 (2.900,4.50)	7.13 (6.08,8.11)	<0.001
Time to ambulation	7.94 (7.03,9.36)	16.60 (15.33,18.75)	<0.001
Complications, n (n/%)	6 (18.2%)	5 (17.9%)	0.97
Dural tear	2 (6.06%)	1 (3.57%)
Urinary retention	2 (6.06%)	2 (7.14%)
Acute exacerbation of chronic bronchitis	1 (3.03%)	0
Acute left heart failure	1 (3.03%)	0
Transient delirium	0	2 (7.14%)