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. 2020 Jan 17;20:15. doi: 10.1186/s12893-020-0680-8

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© The Author(s). 2020

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. 1 — Comparison of the effects of the Isobar TTL dynamic stabilization system and the rigid fixation system on lumbar mobility and height of intervertebral space. a The intervertebral space height of L3/4, the surgical segment, in the Isobar TTL and rigid groups before surgery and at the last follow-up. b The intervertebral space height of L2/3, the upper adjacent segment, in the Isobar TTL and rigid groups before surgery and at the last follow-up. c ROMs of the nonfusion fixed segment before surgery and at the last follow-up. d The ROM of the surgical segment L3/4 before surgery and at the last follow-up in the two groups. e The ROM of upper adjacent segment L2/3 before surgery and at the last follow-up in the two groups. * means P < 0.05