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Journal of Korean Neurosurgical Society 2009;46(4): 312-316.
doi: https://doi.org/10.3340/jkns.2009.46.4.312
Strategies for Noncontained Lumbar Disc Herniation by an Endoscopic Approach : Transforaminal Suprapedicular Approach, Semi-Rigid Flexible Curved Probe, and 3-Dimensional Reconstruction CT with Discogram.
Ki Hwan Chae, Chang Il Ju, Seung Myung Lee, Byoung Wook Kim, Saeng Youp Kim, Hyeun Sung Kim
1Department of Neurosurgery, College of Medicine, Chosun University, Gwangju, Korea. jchangil@hanmail.net
2Department of Neurosurgery, Huri-Sarang Hospital, Daejeon, Korea.
ABSTRACT
OBJECTIVE
The purpose of this study was to evaluate the efficacy of a transforaminal suprapedicular approach, semi-rigid flexible curved probe, and 3-dimensional reconstruction computed tomography (3D-CT) with discogram in the endoscopic treatment of non-contained lumbar disc herniations. METHODS: The subjects were 153 patients with difficult, non-contained lumbar disc herniations undergoing endoscopic treatment. The types of herniation were as follows : extraforaminal, 17 patients; foraminal, 21 patients; high grade migration, 59 patients; and high canal compromise, 56 patients. To overcome the difficulties in endoscopic treatment, the anatomic structures were analyzed by 3D reconstruction CT and the high grade disc was extracted using a semi-rigid flexible curved probe and a transforaminal suprapedicular approach. RESULTS: The mean follow-up was 18.3 months. The mean visual analogue scale (VAS) of the patients prior to surgery was 9.48, and the mean postoperative VAS was 1.63. According to Macnab's criteria, 145 patients had excellent and good results, and thus satisfactory results were obtained in 94.77% cases.
CONCLUSION
In a posterolateral endoscopic lumbar discectomy, the difficult, non-contained disc is considered to be the most important factor impeding the success of surgery. By applying a semi-rigid flexible curved probe and using a transforaminal suprapedicular approach, good surgical results can be obtained, even in high grade, non-contained disc herniations.
Key Words: Intervertebral disc herniation; Percutaneous discectomy; Posterolateal approach
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