Objective    To study the feasibility and effect of microendoscopic discectomy on the central type of enormous intervertebral disc herniation.     Methods    From 2003 to 2006

23 patients (18 males

5 females) were diagnosed with enormous central type lumbar disc herniation and treated by microendoscopic discectomy. Their clinical data were restropectively analyzed

and postoperative outcomes in hip function were evaluated by Macnab scoring system.     Results    Being followed up for 3-12 months

21(86.9%) patients were rated as good or excellent for their outcome

and the other two as fair.     Conclusion    Microendoscopic discectomy through interlaminar approach achieves satisfied outcome for enormous central type lumbar disc herniation.