2.4. Statistical Analysis
angulation
We prospectively evaluated patients using a 2-sided significance level of 0.05 and a power of 80%. The sample size was calculated according to the outcome of angulation. A power analysis revealed that to detect an angulation of 12.6 degrees, with a standard deviation of 2.5 degrees and a type-I error rate of 0.05, a power of 0.8 and a minimum of 60 patients were needed per treatment group. An ANOVA was performed to determine the results of clinical and radiological outcomes for analysis. Statistical significance was set at 