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

Table 4

Comparison of surgical outcome.

	Endoscopic; (N=164)	Tubular; (N=34)	Microscopic; (N=72)	p value
Avg EBL(ml)	35.34±28.87^†	72±23.21(44-350)	134.3±35.34	0.087
Avg. surgery time; (minutes/ level)	84.17±34.70	66.12±15.93	52.22±19.07	≤0.001
Avg. hospital stay (days)	2.12±1.68	2.83±1.99	4.85±1.86	≤0.001
Serum CPK (IU/L); ( POD#1 day – Preoperative)	66.38±63.61	137.5±101.00	120 ±116.89	0.030
Perioperative complication; Rate (% of patients)	7.9%	8.8%	8.3%	NS
	Dura tear (4); Dysthesia (7); Motor weakness (1); Disc recur(1)	Postop. Hematoma (1); Dysthsia(1); Disc Recur(1)	Postop. Hematoma(1); Dysthesia(4); Dura tear (1)

NS=not significant; Avg=average; EBL=estimated blood loss; CPK=creatine phosphokinase; POD=postoperative day; =statistically significant, †=only hemovac drainage.