Article Figures & Data
Figures
- Figure 1
Investigational interspinous process fixation device (Aspen MIS Fusion System).
- Figure 2
Flow chart reflecting numbers of patients at enrollment, allocation, and follow-up, including reason(s) for exclusion/lost to follow-up.
- Figure 3
Mean ODI score improvement from baseline at 6 weeks, 3 months, 6 months, and 12 months; no significant differences (P < .05) were observed between cohorts at any time point. Scores at each time point were significantly reduced from baseline for both cohorts (P < .01). Abbreviations: ODI, Oswestry Disability Index; ISPF, interspinous process fixation; PSF, pedicle screw fixation.
- Figure 4
ZCQ physical (left) and ZCQ symptom (right) scores at baseline and 12 months; no significant differences (P < .05) were observed between cohorts at either time point. Scores were significantly reduced from baseline for both cohorts (P < .01). Abbreviations: ZCQ, Zurich Claudation Questionnaire; ISPF, interspinous process fixation; PSF, pedicle screw fixation.
- Figure 5
SF-36 physical (left), SF-36 mental (middle), and SF-36 bodily pain (right) scores at baseline and at 12 months; no significant differences (P < .05) were observed between cohorts at either time point. Scores were significantly reduced from baseline for both cohorts (P < .01). Abbreviations: SF-36, 36-Item Short Form Health Survey; ISPF, interspinous process fixation; PSF, pedicle screw fixation.
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