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Original Article
Korean J Spine 2011;8(1): 31-35.
9
DOI: https://doi.org/10.14245/kjs.2011.8.1.31   
Clinical Results of Interlaminar Approach for Endoscopic Discectomy in the Herniated Lumbar Disc at L5-S1.
Jin Kyu Choi, Kyeong Sik Ryu, Chun Kun Park
Department of Neurosurgery, Seoul St. Mary's Hospital The Catholic University, Seoul, Korea. nsdoc35@catholic.ac.kr
Abstract
OBJECTIVE
This retrospective study of 57 patients was performed to evaluate the therapeutic effectiveness of percutaneous endoscopic surgery by using interlaminar approach (ILA) in symptomatic lumbar disc herniation (LDH) at L5-S1.
METHODS
Visual analogue pain score (VAS) and Oswestry disability index (ODI) were used to assess the clinical outcome. All assessment was done on 1 day before the operation, 3 days, 3months and 12months after the operation.
RESULTS
The mean preoperative back and leg VAS was decreased from 5.6+/-1.4, 8.5+/-1.7 to 1.8+/-1.2, 1.5+/-1.3 at 3 days, 1.2+/-1.1, 1.8+/-1.7 at 3 months, and 1.4+/-1.7, 1.6+/-1.3 at 12 months after the operation. Mean preoperative ODI score was improved from 46.8+/-22.4% to 17.7+/-11.6% at 3 days, 15.3+/-10.1% at 3 months, and 16.2+/-9.3% at 12 months after the operation. There were 2 cases of surgical failure due to dural tearing and calcified disc. One patient presented with transient paresthesia postoperatively. Two patients showed the recurrent disc herniation at the same level and same side, and underwent second open surgery.
CONCLUSION
The present study revealed that percutaneous endoscopic surgery by using ILA is an effective surgical modality for the selective cases of LDH at L5-S1.
Keywords: Discectomy;Endoscopic surgery;Lumbar disc herniation;Minimally invasive surgery;Interlaminar approach
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    Journal Impact Factor 3.8
    SURGERY: Q1
    CLINICAL NEUROLOGY: Q1
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