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. 2016 Apr 25;11:47. doi: 10.1186/s13018-016-0382-1

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© Chen et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 5 — Comparison between two groups of improvements in functional and pain scores at 2 weeks, 3 months, 6 months, and 12 months after surgery. Median values and ranges are presented. ODI Oswestry Disability Index, VASBP visual analog scale for back pain, VAS-LP visual analog scale for leg pain