This study investigated perspectives of 58 parents on leg length discrepancy (LLD) of their children using a questionnaire survey. There were significant differences in the pain/comfort (P=0.021) and global function subscales (P=0.013) of the pediatric outcomes data collection instrument between the idiopathic LLD and posttraumatic LLD groups. Significant differences in the items with regard to the satisfaction with appearance (P=0.012), preference for surgical treatment (P<0.001), effect on happiness (P=0.004), and concerns over possible operations (P=0.010) were observed between the LLD of 2 cm or more and LLD of less than 2 cm groups. Logistic regression showed that the only significant contributing factor to a willingness to seek treatment was the amount of LLD (P=0.004).