Clinical Analysis of Minimally Invasive Percutaneous Treatment of Severe Lumbar Disc Herniation with UBE Two-Channel Endoscopy and Foraminal Single-Channel Endoscopy Technique

Table 3

Comparison of postoperative complication rates of patients with different surgical methods between the two groups (%).

Group	Cerebrospinal fluid leakage	Incision infection	Anemia	Residual nucleus pulposus	Incidence rate
UBE group ()	2 (9.1)	0 (0)	6 (27.3)	0 (0)	8 (36.4)
Interforaminal endoscopic group ()	0 (0)	0 (0)	0 (0)	7 (25.0)	7 (25.0)
^2	2.652	/	8.678	6.395	0.758
	0.104	/	0.003	0.011	0.384