title: Fragmentectomy versus Conventional Microdiscectomy in Single-Level Lumbar Disc Herniations : Comparison of Clinical Results and Recurrence Rates.
abstract: OBJECTIVE
  This retrospective study aimed to compare clinical outcomes in terms of pain relief and recurrence rate between fragmentectomies and conventional microdiscectomies in patients with lumbar disc herniation (LDH).
  
  
  METHODS
  Between January 2008 and May 2011, a total of 175 patients met the inclusion criteria of this study. The visual analogue scale (VAS) scores of back and radicular pains were recorded before surgery, 2 and 6 weeks after surgery. Recurrence was defined when a patient had the same pattern of preoperative symptoms and was confirmed with magnetic resonance imaging.
  
  
  RESULTS
  Seventy-four patients (42.3%) were suitable for fragmentectomy, and 101 patients underwent conventional microdiscectomy. There were no significant differences in VAS scores between the fragmentectomy and conventional microdiscectomy groups 2 and 6 weeks after surgery. During the follow-up period, 3 patients (4.05%) in the fragmentectomy group and 7 patients (6.93%) in the conventional microdiscectomy group relapsed.
  
  
  CONCLUSIONS
  If patients are selected according to well-defined criteria, fragmentectomy can be a good surgical option for LDH, in the physiological aspect of preserving healthy intervertebral disc materials.
authors.affiliation: Department of Neurosurgery, Gwangju Saewoori Spine Hospital, Gwangju, Korea.
authors.forename: Geum-Seong
authors.initials: GS
authors.lastname: Baek
authors.forename: Yeon-Seong
authors.initials: YS
authors.lastname: Kim
authors.forename: Min-Cheol
authors.initials: MC
authors.lastname: Lee
authors.forename: Jae-Wook
authors.initials: JW
authors.lastname: Song
authors.forename: Sang-Kyu
authors.initials: SK
authors.lastname: Kim
authors.forename: In-Hwan
authors.initials: IH
authors.lastname: Kim
keywords: Clinical results; Fragmentectomy; Lumbar disc herniation; Microdiscectomy; Recurrence rates