Statistical analysis results.

The Friedman test was used to evaluate differences in pressure across decompression angles, yielding a statistically significant result (p = 6.86 × 10 ⁻ ²⁴; test statistic = 125.03). A Comparison of internal pressure between the no-compression group and each degree of canal opening (Wilcoxon signed-rank test with Bonferroni correction). Since the Friedman test revealed significant differences among groups, pairwise comparisons between each decompression angle and the no-compression group were performed using the Wilcoxon signed-rank test. The Bonferroni correction was applied, and the significance level was set at a Bonferroni-adjusted p-value 0.007). The vertical axis indicates intraneural pressure (cm H₂O), and the horizontal axis represents the degree of canal opening. B Comparison of internal pressure between 0° and all other release angles (Wilcoxon signed-rank test with Bonferroni correction). Pairwise comparisons between each decompression angle and the 0° group were performed using the Wilcoxon signed-rank test. The Bonferroni correction was applied, and the significance level was set at a Bonferroni-adjusted p-value (ZIP)