title: Evaluation of the thickness of the proximal femoral canal in patients living at altitude.
abstract: OBJECTIVE
  Our goal is to confirm the hypothesis that people who were born and raised on cities at altitude have a smaller proximal femoral canal.
  
  
  METHODS
  Prospective study with 169 participants, divided into two groups. Group A: 99 patients who were born and raised at altitude and group B: 70 patients who were born and raised at low altitude. All patients underwent panoramic radiographs of the pelvis, where we marked three measure and checked the thickness of the cortical and the lateral and medial cortical, as well as the thickness of the femoral canal.
  
  
  RESULTS
  We noticed that the first measure showed no significant difference in both groups, but the second measure, the lateral cortex, is thicker in group A, and the femoral canal is smaller in comparison to group B.
  
  
  CONCLUSIONS
  We concluded that patients who were born and raised at altitude have a smaller femoral canal. This may help in proper planning of future surgical procedures, especially in total hip arthroplasty cases.
authors.affiliation: Clinitrauma, Lages, SC, Brazil, 1. Clinitrauma, Lages, SC, Brazil.
authors.forename: Wiliam Soltau
authors.initials: WS
authors.lastname: Dani
authors.affiliation: Hospital Governador Celso Ramos, Orthopedics Service, Florianópolis, SC, Brazil, 2. Orthopedics Service, Hospital Governador Celso Ramos, Florianópolis, SC, Brazil.
authors.forename: Marcos Emilio Kuschnaroff
authors.initials: ME
authors.lastname: Contreras
authors.affiliation: Instituto Politécnico Nacional, Mexico City, Mexico, 3. Instituto Politécnico Nacional, Mexico City, Mexico.
authors.forename: Eleazar Lara
authors.initials: EL
authors.lastname: Padilha
authors.affiliation: Universidad Pablo de Olavide, Seville, Spain, 4. Universidad Pablo de Olavide, Seville, Spain.
authors.forename: Francisco José
authors.initials: FJ
authors.lastname: Berral
keywords: Altitude; Arthroplasty; Hip