Comparative Analysis between Three Different Lumbar Decompression Techniques (Microscopic, Tubular, and Endoscopic) in Lumbar Canal and Lateral Recess Stenosis: Preliminary Report

Table 1

Patient demographics and characteristics.

	Endoscopic	Tubular	Microscopic	p value
Number of patients (N=270)	164	34	72
Levels (N=315); (1 level/ 2 level/ 3 level)	188; (144/16/4)	40; (28/6/0)	87; (60/9/3)
Average Age (years)	53.22±3.5	61.80±7.81	59.32±8.28	NS
Gender (male/female)	52/112	10/24	21/51	NS
BMI	28.1±3.4	27.4±3.5	23.2±3.7	NS
Preoperative VAS(back pain)	5.97±2.77	6.61±2.46	5.09±2.84	NS
Preoperative VAS(Leg pain)	7.01± 2.31	7.38±2.40	6.47±2.73	NS
Preoperative ODI	69.8±5.4	68.6±5.8	56..3±6.1	NS
Spinal canal dimension (mm^2)	81.67±31.30	89.07±40.16	93.52±44.80	NS
Mean follow up duration (months)	6.42±2.68	6.21±3.54	6.32±4.82	NS
Preoperative serum CPK (IU/L)	109.73±46.21	107.2±53.11	99.11±46.44	NS

NS=not significant; BMI= Body Mass Index; VAS=Visual Analogue Scale; ODI=Oswestry Disability Index;
CPK=creatine phosphokinase.