title: Mechanical analysis of femoral neck fracture fixation in synthetic bone.
abstract: OBJECTIVE
  To analyze statistically results obtained between biomechanical assays on fixation of femoral neck fracture type Pauwels III, on synthetic bone, using 7.5 mm non parallel cannulated screws and control group.
  
  
  METHODS
  Ten synthetic bones from a national brand were used. Test group: fixation of 70((o)) tilt femoral neck osteotomy was performed using three 7.5 mm non parallel cannulated screws. We analyzed the resistance of this fixation with 5 mm of displacement, and rotational deviation (phase 1) and with 10 mm offset (phase 2).
  
  
  METHODS
  the models were tested in their integrity until the femoral neck fracture occurred.
  
  
  RESULTS
  the values of the test group in phase 1, in sample 1-5 had a mean of 517N and SD = 96N. Rotational deviations showed a mean of 3.79° e SD = 2. 03°. In phase 2, mean was 649N and SD = 94N. The values of the maximum load in the control group were: 1544N, 1110N, 1359N, 1194N, 1437N; respectively. Statistical analysis between the groups showed a statistically significant lower value in the test group.
  
  
  CONCLUSIONS
  the analysis of mechanical resistance between the groups has determined statistically significant value for the test group.
authors: 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil.
authors: Anderson
authors: A
authors: Freitas
authors: 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil.
authors: Bruna Alves Soares
authors: BA
authors: Azevedo
authors: 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil.
authors: Roberto Rodrigues
authors: RR
authors: de Souza
authors: 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil.
authors: Hélio Ismael
authors: HI
authors: da Costa
authors: 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil.
authors: Rafael Almeida
authors: RA
authors: Maciel
authors: 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, 1. Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil, Hospital Ortopédico e Medicina Especializada (HOME), Brasília, DF, Brazil.
authors: Diogo Ranier de Macedo
authors: DR
authors: Souto
keywords: Biomechanical phenomenas; Femoral neck fractures; Fracture fixation, internal