Statistical analysis
primary uncemented THA, OA, THA
In the present study, we examined the effectiveness of the LOCOBOT for the WBR and balance ability in the static standing position in patients with unilateral hip OA who underwent primary uncemented THA. All data was expressed as mean ± standard deviation. The difference in each motor function parameter was examined between the two groups before THA and 12 days after THA. In the statistical analyses, parameters that followed a normal distribution were analyzed using unpaired Given the lack of previous clinical studies comparing a LOCOBOT group and a control group of hip OA patients, the target number of cases was set to a total of 20 (10 each in the LOCOBOT and control group). Post-hoc power analysis was performed using “EZR” (Easy R) software version 1.61 (Saitama Medical Center, Jichi Medical University, Saitama, Japan) (