Treatment stability of Milwaukee brace in idiopathic hyperkyphosis

Background:The Milwaukee brace is an efficient method for correcting hyperkyphosis before skeletal maturity. However, loss of correction in long-term follow-up is inevitable.Objectives:To determine loss of correction and factors affecting the loss of correction.Study design:Retrospective study.Methods:A total of 49 corrected patients by Milwaukee brace participated minimum 2 years after treatment completion. The participants were categorized into two groups based on their roentgenograms: Group 1 (n = 36) had kyphotic curves of 45° or less and Group 2 (n = 13) had kyphotic curves of more than 45°.Results:The mean loss of corrections for Group 1 and Group 2 were 3.80° (ranges = 0°–13°) and 12.92° (ranges = 8°–22°), respectively. Group 1 showed no significant difference between the average hyperkyphosis of the patients for the part-time and full-time treatment duration (p = 0.02). By contrast, a significant difference was observed between the average hyperkyphosis of patients in Group 2 for the part-time and...