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KMID : 0388720100170040169
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Journal of Korean Society of Spine Surgery
2010 Volume.17 No. 4 p.169 ~ p.176
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Radiological and Clinical Outcome after Simple Discectomy of Central Massive Lumbar Disc Herniation
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Koh Young-Do
Rhee Seung-Jun
Kim Dong-Jun
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Abstract
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Study Design: This is a retrospective case control study.
Objectives: To analyze our results following simple discectomy of central massive disc herniation focusing on instability for the usefulness of intervertebral fusion.
Summary of the Literature Review: Lumbar instability is a complication of central massive disc herniation. However, there is limited evidence on the correlation between lumbar instability and loss of disc material.
Materials and Methods: A total of 25 patients who had undergone discectomy for a single-level lumbar disc herniation were followed up for two years. The clinical group (group A) included 12 patients that had a compromised canal with greater than 50% of the herniated disc, while the central axis of the herniated disc was less than 20% deviated from the center axis of the spinal canal, as seen on MRI. The control group (group B) had 13 patients that had a compromised canal with less than 50% of the herniated disc while their axis was more than 20% deviated from the center axis of the spinal canal. Clinical and radiologic instability, pain and functional disability were compared between the two groups.
Results: No differences was found between the two groups in clinical instability, radiological instability, visual analogue scale (VAS), and the Oswestry disability index (ODI).
Conslusions: Central massive disc herniation after discectomy did not show a significant difference in clinical or radiological instability from that of other herniation types.
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KEYWORD
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Discectomy, Central massive disc herniation, Instability
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