Marengo, Ajello, Pilloni et al. (2017)

Jan 2015 to Mar 2016

Prospective cohort study

20

20

1 year

VAS score for lower back pain was significantly decreased from 8.6 (SD1.19) preoperatively to 1.95 (SD1.47) postoperative in CBT group and 8.25 (SD1.27) preoperatively to 2.85 (SD1.31) postoperative in PS group (p < 0.001). At final follow up the mean ODI score in CBT group was decreased from 68% ± 37% to 9% ± 10% and from 58% ± 15% to 23% ± 9% in the PS group (p = 0.0150).

Both the VAS score and the ODI score shows significantly lower in CBT group.

Sakura, Miwa, Kuroda et al. (2018)

Nov 2011 to Sept 2013 for CBT group and Aug 2009 to Oct 2011 for PS group

Cohort study

22

20

39 months

There was significant improvement on mean JOA score from 12.3 points preoperative to 21.1 points (mean recovery rate 54.4%) on final follow up in CBT group compared to 12.8 points pre-operative to 20.4 points (mean recovery rate 51.8%) on final follow up on PS group (p > 0.05).

No significant difference was found in the JOA score before and after the surgery between the two groups.