title: MULTIPLE SEGMENTAL OSTEOTOMIES TO THE KYPHOSIS CORRECTION.
abstract: OBJECTIVE
  To evaluate the results of the surgical treatment of the spinal Kyphosis using the Ponte's technique (multiple posterior osteotomies).
  
  
  METHODS
  Ten patients (8 with Scheuermann's kyphosis and 2 with kyphosis after laminectomy) submitted to surgical correction of kyphotic deformity greater than 70° were retrospectively assessed. The age at the surgical time ranged from 12 to 20 years old (mean age16.8 years ± 2.89). The radiographic parameters evaluated were the kyphosis, the lordosis and the scoliosis - whenever present. The presence of proximal and distal junctional kyphosis, loss of correction, and complications as implants loosening and breakage were also assessed. The radiographic parameters were evaluated at the preoperative, early postoperative and late postoperative time.
  
  
  RESULTS
  The patients were followed through a period that ranged from 24 to 144 months (65.8 ±39.92). The mean value of the kyphosis was 78.8° ± 7.59° (Cobb) before surgery and 47.5° ± 12.54° at late follow up, with mean correction of 33.9° ± 9.53° and lost correction of 2.2°.
  
  
  CONCLUSIONS
  The surgical treatment of the thoracic kyphosis using multiples posterior osteotomies presented a good correction of the deformity and minimal lost of correction during follow up.
authors.affiliation: Post-graduate Student, Department of Biomechanics, Medicine and Rehabilitation of the Locomotor Apparatus, Hospital das Clínicas, School of Medicine, Ribeirão Preto-USP, Ribeirão Preto, SP, Brazil.
authors.forename: Carlos Fernando Pereira
authors.initials: CF
authors.lastname: da Silva Herrero
authors.affiliation: Post-graduate Student, Department of Biomechanics, Medicine and Rehabilitation of the Locomotor Apparatus, Hospital das Clínicas, School of Medicine, Ribeirão Preto-USP, Ribeirão Preto, SP, Brazil.
authors.forename: Maximiliano Aguiar
authors.initials: MA
authors.lastname: Porto
authors.affiliation: Professor, Radiology Division, Department of Clinical Medicine, School of Medicine, Ribeirão Preto-USP, Ribeirão Preto, SP, Brazil.
authors.forename: Marcello Henrique Nogueira
authors.initials: MH
authors.lastname: Barbosa
authors.affiliation: Full Professor, Department of Biomechanics, Medicine and Rehabilitation of the Locomotor Apparatus, Hospital das Clínicas, School of Medicine, Ribeirão Preto-USP, Ribeirão Preto, SP, Brazil.
authors.forename: Helton Luiz Aparecido
authors.initials: HL
authors.lastname: Defino
keywords: Kyphosis; Osteotomy; Scheuermann disease; Spinal fusion; Spine