title: The influence of elastic orthotic belt on sagittal profile in adolescent idiopathic thoracic scoliosis: a comparative radiographic study with Milwaukee brace.
abstract: BACKGROUND
  The effectiveness of bracing on preventing curve progression in coronal plane for mild and moderate adolescent idiopathic scoliosis (AIS) patients has been confirmed by previous radiographic researches. However, a hypokyphotic effect on the sagittal plane has been reported by a few studies. A relatively increasing number of AIS patients were noticed to wear a new kind of elastic orthotic belt for the treatments of scoliosis without doctors' instructions. We postulate the correcting mechanism of this new appliance may cause flattening of the spine. To our knowledge, no study has investigated the effects of this new orthosis on the sagittal profile of AIS patients. The aim of this study was to evaluate and compare the effects of elastic orthotic belt and Milwaukee brace on the sagittal alignment in AIS patients.
  
  
  METHODS
  Twenty-eight female AIS patients with mild or moderate thoracic curves were included in this study. Standing full-length lateral radiographs were obtained in three conditions: natural standing posture without any treatment, with elastic orthotic belt and with Milwaukee brace. Thoracic kyphosis (TK), lumber lordosis (LL) and pelvic incidence (PI) were measured and compared between the above three conditions.
  
  
  RESULTS
  Both elastic orthotic belt and Milwaukee brace can lead to significant decrease of TK, however, the decrease of TK after wearing elastic orthotic belt is significantly larger than that after wearing Milwaukee brace. Compared with no treatment, LL was found to be significantly smaller after wearing Milwaukee brace, however, such significant decrease was not noted after wearing elastic orthotic belt. No significant changes were observed for the PI between 3 conditions.
  
  
  CONCLUSIONS
  The elastic orthotic belt could lead to more severe thoracic hypokyphosis when compared with Milwaukee brace. This belt may not be a suitable conservative method for the treatment of mild and moderate AIS patients.
authors.affiliation: Spine Surgery, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Jiang
authors.forename: Yong
authors.initials: Y
authors.lastname: Qiu
authors.forename: Saihu
authors.initials: S
authors.lastname: Mao
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Zhao
authors.forename: Bangping
authors.initials: B
authors.lastname: Qian
authors.forename: Feng
authors.initials: F
authors.lastname: Zhu
mesh_terms: D000293:Adolescent; D001915:Braces / Q000009:adverse effects* / Q000592:standards; D002648:Child; D005260:Female; D006801:Humans; D009989:Orthotic Devices / Q000009:adverse effects* / Q000592:standards; D011859:Radiography; D012544:Scheuermann Disease / Q000000981:diagnostic imaging* / Q000209:etiology / Q000628:therapy*; D012600:Scoliosis / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000628:therapy*