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. 2014 Oct 31;56(4):338–343. doi: 10.3340/jkns.2014.56.4.338

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Copyright © 2014 The Korean Neurosurgical Society

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1 — The mean preoperative VAS score for back pain was 7.1, which improved to 2.0 at 24 months' follow-up (p<0.001) (A), and the patients' mean score on the K-ODI improved from 26.5% to 7.7% (p<0.001) by the 24 months' follow-up (B). VAS : Visual Analogue Scale, K-ODI : Oswestry Disability Index.