Reconstrução do ligamento cruzado anterior: influência da solidarização e da rotação do enxerto na fixação com pinos transversos
Purpose: To make comparison between sewed and not sewed and between two different rotational positions of transverse fixed tendon graft inside bone tunnel. Methods: Thirty-six quadrupled bovine tendon grafts fixation systems in porcine femurs models were divided into four groups concerning rotationa...
| Autor principal: | Alberti, Hermes Augusto Agottani |
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| Formato: | Dissertação |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2013
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/610 |
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| Resumo: |
Purpose: To make comparison between sewed and not sewed and between two different rotational positions of transverse fixed tendon graft inside bone tunnel. Methods: Thirty-six quadrupled bovine tendon grafts fixation systems in porcine femurs models were divided into four groups concerning rotational positioning inside de bone tunnel and the presence of sewing through the tendon sections. By measuring displacement and load at the resistance limit, first validated peak and 445N point, the groups were compared and the rigidity was achieved. The intermediate validated peaks were observed. Results: looped positioned groups showed higher fail points levels than the transfixed groups using all parameters (p<0,05), as well as greater rigidity when using the maximum load as fail parameter. In transfixed tendons groups, the sewed tendon group showed greater Fmax and Fp (Fmax 1555,4N ± 408 versus 1135,2N ± 448,7 and Fp 1539,9N ± 400,8 versus 950,5N ± 599,8), p<0,05. Intermediate peaks incidence was greater in the not-sewed/not-looped (transfixed) group Conclusion: looped positioned group gave better results: greater Fmax, Fp, and rigidity. The transfixed tendons group had better response to tensile load when sewed. |
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