Biomechanical analysis of a double fixation method for tendon graft in porcine tibia - using an interference screw plus staple
ABSTRACT 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 (F10), yield load (Fy), and stiffness. Results: The mean values of graft cross-sectional area, F10, Fy, 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.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Ortopedia e Traumatologia
2018
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162018000500564 |
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