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. 2018 Jun 26;10:349–357. doi: 10.2147/CEOR.S164129

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© 2018 Klassen et al. This work is published and licensed by Dove Medical Press Limited

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At 2-years of follow-up from the index procedure, the mean Oswestry Disability Index (ODI) (A), visual analog scale (VAS) leg (B), and VAS back (C) scores are significantly greater (worse) in patients who required reoperation (Post Reop) compared with patients who did not require reoperation (No Reop). The mean 36-Item Short-Form General Health Survey (SF-36) Mental Component Summary (MCS) and Physical Component Summary (PCS) scores were significantly lower (worse) in Post Reop patients compared to No Reop patients (D, E). Further stratifying the groups based on treatment demonstrated no significant differences between control and annular closure device (ACD)-treated patients for any of these metrics. ****p<0.0001 by two-way ANOVA. Bars represent mean and error bars represent SD.