title: TREATMENT OF PROXIMAL FEMORAL EPIPHYSIOLYSIS WITH SUBTROCHANTERIC OSTEOTOMY BY THE ILIZAROV METHOD.
abstract: OBJECTIVE
  To evaluate the treatment of severe proximal femoral epiphysiolysis through subtrochanteric osteotomy using the Ilizarov method and to propose a new method for calculating the necessary correction.
  
  
  METHODS
  A case study was carried out among patients affected by severe proximal femoral epiphysiolysis who underwent subtrochanteric osteotomy with external multiplanar fixation and were evaluated postoperatively using the modified Southwick classification. A method was developed for calculating the angular correction needed for the surgical procedure.
  
  
  RESULTS
  Thirteen hips were analyzed: four left hips (30.8%) and nine right hips (69.2%). The majority of the patients (61.5%) were male, with a mean age of 14 years. In relation to pain and function, the results were excellent for 30.8%, good for 46.2% and regular for 23.0%, and none of the patients presented poor results. Regarding mobility, the results were excellent for 46.2%, good for 30.8% and regular for 23.0%. Radiographically, the results were excellent for 7.7%, good for 69.2%, regular for 15.4% and poor for 7.7%.
  
  
  CONCLUSIONS
  Percutaneous treatment of severe proximal epiphysiolysis using the Ilizarov method is a good treatment option with good indices for improvement of pain and function. The proposed calculation method can help in planning surgical procedures, with variations between calculated and measured angles of the order of 3°.
authors.affiliation: Orthopedist and Traumatologist at the Institute of Orthopedics and Traumatology of Passo Fundo, RS, and Hospital de Clínicas de Porto Alegre, UFRGS.
authors.forename: Leandro de Freitas
authors.initials: Lde F
authors.lastname: Spinelli
authors.affiliation: Orthopedist and Traumatologist and Hip Surgery Specialist at the Institute of Orthopedics and Traumatology of Passo Fundo, RS.
authors.forename: Samuel
authors.initials: S
authors.lastname: Faccioni
authors.affiliation: Physician and Supervisor of Medical Residence in Pediatric Orthopedics at the Institute of Orthopedics and Traumatology of Passo Fundo, RS. Head of the Pediatric Orthopedics Service.
authors.forename: Jung Ho
authors.initials: JH
authors.lastname: Kim
authors.affiliation: Physician and Supervisor of Medical Residence in Pediatric Orthopedics at the Institute of Orthopedics and Traumatology of Passo Fundo, RS.
authors.forename: Luis Gustavo
authors.initials: LG
authors.lastname: Calieron
authors.affiliation: Physician and Specialist in Pediatric Orthopedics at the Institute of Orthopedics and Traumatology of Passo Fundo.
authors.forename: Juan Carlo
authors.initials: JC
authors.lastname: Mendieta Rojas
keywords: Dislocated epiphyses; External fixators; Ilizarov technique; Osteotomy