Table 4.

Long-term results of operations for lumbar disc herniation: endoscopic microdiscectomy

Authors [Ref.]	Patients, n	Mean follow-up, years	Good/excellent results, s%
Casal-Moro et al. [6]	120	5	95
Chang et al. [8]	26	3	Not given
Liu et al. [27]	82	6.4	84
Wu et al. [54]	873	2.3	77
Total	1,101
Mean		2.9	79.5