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Doctoral Thesis
DOI
https://doi.org/10.11606/T.5.2011.tde-04052011-173111
Document
Author
Full name
Bruno Testoni Lins
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2011
Supervisor
Committee
Guarniero, Roberto (President)
Croci, Alberto Tesconi
Godoy Junior, Rui Maciel de
Prada, Flávia de Santis
Vaz, Carlos Eduardo Sanches
Title in Portuguese
Avaliação biomecânica comparativa de duas técnicas de osteotomia varizante proximal do fêmur: estudo em cadáveres de cães
Keywords in Portuguese
Cadáver
Cães
Displasia pélvica canina
Luxação congênita de quadril
Osteotomia
Abstract in Portuguese
O presente estudo compara uma nova técnica de osteotomia varizante em cúpula à tradicional osteotomia intertrocantérica varizante do fêmur em cadáveres de cães. Foram utilizados 10 pares de fêmures, provenientes de cães eutanasiados por razões independentes do presente estudo. Os espécimes foram divididos em dois grupos de acordo a técnica empregada e avaliados radiograficamente para mensuração do comprimento femoral e valores de ângulo de inclinação do colo femoral, ângulo femoral proximal lateral mecânico, ângulo femoral proximal lateral anatômico, ângulo femoral distal lateral mecânico, ângulo femoral distal lateral anatômico e ângulo de anteversão do colo femoral. Posteriormente, foram realizados os ensaios mecânicos para determinação da resistência em ambos os grupos. As avaliações radiográficas demonstraram a efetividade de ambos os métodos na varização do fêmur proximal. A técnica de osteotomia varizante em cúpula mostrou valores de resistência mecânica e modo de falência dos implantes empregados na osteossíntese comparados à técnica de osteotomia intertrocantérica varizante em cunha. Os testes biomecânicos demonstram a exeqüibilidade da técnica de osteotomia varizante em cúpula como alternativa ao tratamento da displasia coxofemoral em cães
Title in English
Comparative biomechanical assessment of two techniques of proximal femoral varus osteotomy. Study in cadavers of dogs
Keywords in English
Cadaver
Coxofemoral dysplasia
Dog
Osteotomy
Varus intertrochanteric osteotomy
Abstract in English
The present study compares a new varus dome osteotomy technique to the traditional femoral varus intertrochanteric osteotomy in dogs. Ten pairs of femurs were used from dogs euthanized due to reasons unrelated to our study. The specimens were divided in two groups according to the technique and radiographically assessed to measure femoral length and femoral neck inclination angle, mechanical lateral proximal femoral angle, anatomical lateral proximal femoral angle, mechanical lateral distal femoral angle, anatomical lateral distal femoral angle and femoral neck anteversion angle values. Mechanical assays were then performed to determine resistance in both groups. The radiographic assessments showed the effectiveness of both methods in varization of the canine proximal femur. The varus dome osteotomy technique showed mechanical resistance values and failure mechanism of the systems similar when compared to varus wedge intertrochanteric osteotomy. The biomechanical tests demonstrated the varus dome osteotomy technique feasibility as an alternative for coxofemoral dysplasia treatment in dogs
 
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BrunoTestoniLins.pdf (2.29 Mbytes)
Publishing Date
2011-05-06
 
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