title: ANALYSIS OF THE SEGMENTAL IMPACTION OF FEMORAL HEAD FOLLOWING AN ACETABULAR FRACTURE SURGICALLY MANAGED.
abstract: OBJECTIVE
  Correlate the postoperative radiographic evaluation with variables accompanying acetabular fractures in order to determine the predictive factors for segmental impaction of femoral head.
  
  
  METHODS
  Retrospective analysis of medial files of patients submitted to open reduction surgery with internal acetabular fixation. Within approximately 35 years, 596 patients were treated for acetabular fractures; 267 were followed up for at least two years. The others were excluded either because their follow up was shorter than the minimum time, or as a result of the lack of sufficient data reported on files, or because they had been submitted to non-surgical treatment. The patients were followed up by one of three surgeons of the group using the Merle d'Aubigné and Postel clinical scales as well as radiological studies.
  
  
  RESULTS
  Only tow studied variables-age and amount of postoperative reductionshowed statistically significant correlation with femoral head impaction.
  
  
  CONCLUSIONS
  The quality of reduction-anatomical or with up to 2mm residual deviation-presents a good radiographic evolution, reducing the potential for segmental impaction of the femoral head, a statistically significant finding.
authors.affiliation: Education Teacher, FCMSCSP; Assistant, Hip Group, Department of Orthopedics and Traumatology, School of Medical Sciences, Santa Casa de São Paulo (FCMSCSP), São Paulo, Brazil.
authors.forename: Rodrigo Pereira
authors.initials: RP
authors.lastname: Guimarães
authors.affiliation: Resident, Department of Orthopedics and Traumatology, FCMSCSP, São Paulo, Brazil.
authors.forename: Camila Cohen
authors.initials: CC
authors.lastname: Kaleka
authors.affiliation: Resident, Department of Orthopedics and Traumatology, FCMSCSP, São Paulo, Brazil.
authors.forename: Carina
authors.initials: C
authors.lastname: Cohen
authors.affiliation: Orthopedist; Volunteer, Hip Group, Department of Orthopedics and Traumatology, FCMSCSP, São Paulo, Brazil.
authors.forename: Daniel
authors.initials: D
authors.lastname: Daniachi
authors.affiliation: Assistant Professor and Physician, FCMSCSP; Head, Hip Group, Department of Orthopedics and Traumatology, FCMSCSP, São Paulo, Brazil.
authors.forename: Nelson
authors.initials: N
authors.lastname: Keiske Ono
authors.affiliation: Education Teacher and Physician, FCMSCSP; Senior Member, Hip Group, Department of Orthopedics and Traumatology FCMSCSP, São Paulo, Brazil.
authors.forename: Emerson Kiyoshi
authors.initials: EK
authors.lastname: Honda
authors.affiliation: Assistant Professor and Physician, FCMSCSP; Assistant, Hip Group, Department of Orthopedics and Traumatology, FCMSCSP, São Paulo, Brazil.
authors.forename: Giancarlo Cavalli
authors.initials: GC
authors.lastname: Polesello
authors.affiliation: Orthopedist; Assistant, Hip Group, Department of Orthopedics and Traumatology, FCMSCSP, São Paulo, Brazil.
authors.forename: Walter
authors.initials: W
authors.lastname: Riccioli
keywords: Acetabulum/injuries; Acetabulum/surgery; Femur head necrosis; Hip fractures