Estudo biomecânico da corpectomia lateral parcial isolada e suas associações com pediculectomia e hemilaminectomia, com e sem estabilização vertebral, em cães da raça Dachshund

• Autor(a) principal: ARAÚJO, Bruno Martins
• Data de Publicação: 2017
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRPE
• Texto Completo: http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/7141
• topic: Pediculectomia; Hemilaminectomia; Corpectomia; Coluna vertebral; Biomecânica; Cão; CIENCIAS AGRARIAS::MEDICINA VETERINARIA

The objective of this study was to compare the levels of displacement versus force in techniques of partial lateral corpectomy (PLC), PLC associated with pediculectomy and PLC associated with pediculectomy and hemilaminectomy, with and without vertebral stabilization, during rotational movements, flexion, extension, lateral flexion and axial compression, to establish whether there is significant difference between these techniques in the referred breed. When vertebral stabilization was not performed, in all analyzes, the means of displacement were lower in the assessment of normal vertebra, followed by increases in the means of PLC, PLC associated with pediculectomy and hemilaminectomy. In the evaluation of the differences between the means of each technique in relation to the evaluation performed before the decompression procedures, there was an increase in the means concomitantly with an increase in the number of associated decompression procedures. In the analysis of the force versus displacement curve, there was an increase of the neutral zone in the flexion, lateral flexion and rotation movements after PLC and in the associations with the different decompression techniques. When analyzing the influence of vertebral stabilization, the mean values were higher in the evaluation of the intact vertebra and lower after the PLC, increasing the degree of displacement as it was associated with decompression techniques and vertebral stabilization in the variables axial compression, flexion, right and left lateral flexion. In the other parameters, the values were variable. In comparison between the techniques with and without pedicular screw, the means were higher when only the decompression procedures were performed and smaller after the stabilization with pedicular screws. The results suggested that spinal stabilization is not necessary in Dachshund dogs submitted to PLC and PLC associated with pediculectomy. However, PLC associated with pediculectomy and hemilaminectomy in this type of patients should be performed with caution, due to a significant increase in the range of motion. When this association is required, vertebral stabilization is indicated and was efficient in maintaining the vertebral displacement close to the values of normal displacement of intact vertebra in Dachshund dogs.