Figure 4).

Outcome measures of the brief pain inventory at each time point before and following intervention (trigger point injection with bupivacaine [0.25%]). A Pain intensity right now. B Pain interference. Data are presented as median ± the 25th and 75th percentile. Statistical analysis via a nonparametric ANOVA revealed statistically significant differences from the initial time point (week 0) for each parameter: K=20.34, P=0.0004 for pain intensity right now; and K=31.86, P<0.0001 for pain interference. Post hoc analysis via Dunn’s test revealed statistically significant differences for all time points compared with time point 0; +P<0.05, ++P<0.01, +++P<0.001. A Wilcoxon signed-ranked test compared before and following intervention for each time point; *P<0.05, **P<0.01, ***P<0.001. nd No significant difference