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Biomechanical analysis of a double fixation method for tendon graft in porcine tibia – using an interference screw plus staple()

OBJECTIVE: The aim of the study was to compare the mechanical behavior of interference screw tibial fixation vs. screw-plus-staple tibial fixation in an animal model. METHODS: Thirty-six pieces of swine knee specimens were selected and divided into two groups: Group 1, tibial fixation with interfere...

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Detalles Bibliográficos
Autores principales: Bauer, Luis Antônio de Ridder, Alberti, Hermes Augusto Agottani, Corotti, Vitor Gustavo de Paiva, Franco, Ana Paula Gebert de Oliveira, Stieven Filho, Edmar, Cunha, Luiz Antônio Munhoz da
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6147759/
https://www.ncbi.nlm.nih.gov/pubmed/30245995
http://dx.doi.org/10.1016/j.rboe.2018.07.003
Descripción
Sumario:OBJECTIVE: The aim of the study was to compare the mechanical behavior of interference screw tibial fixation vs. screw-plus-staple tibial fixation in an animal model. METHODS: Thirty-six pieces of swine knee specimens were selected and divided into two groups: Group 1, tibial fixation with interference screw (n = 17), and Group 2, fixation with interference screw and staple (n = 19). The models were submitted to a single cycle of tension testing. The following variables were measured: graft cross-sectional area, failure point on 10 mm (F(10)), yield load (F(y)), and stiffness. RESULTS: The mean values of graft cross-sectional area, F(10), F(y), and stiffness did not present significant differences between the groups. CONCLUSION: The addition of a second staple-type ligament fixation device, complementing the interference screw, did not increase the mechanical safety of the system.