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dc.contributor.authorCasha, Aaron-
dc.contributor.authorGauci, Marilyn-
dc.contributor.authorYang, Lang-
dc.contributor.authorSaleh, Michael-
dc.contributor.authorKay, Philip H.-
dc.contributor.authorCooper, Graham J.-
dc.identifier.citationCasha, A. R., Gauci, M., Yang, L., Saleh, M., Kay, P. H., & Cooper, G. J. (2001). Fatigue testing median sternotomy closures. European Journal of Cardio-Thoracic Surgery, 19(3), 249-253.en_GB
dc.description.abstractObjective: Sternal dehiscence is commonly due to wire cutting through bone. With a biological model, we measured the rate of cutting through bone, of standard steel wire closure, peristernal steel wire, figure-of-eight closure, polyester and sternal bands sternotomy closure techniques. Methods: Polyester, figure-of-eight, peristernal and sternal band closures were tested against standard closure eight times using adjacent paired samples, to eliminate biological variables. Fatigue testing was performed by a computerized materials-testing machine, cycling between loads of 1 and 10 kg. The displacements at maximum and minimum loads were measured during each cycle. Cutting through, manifested by the displacement at the maximum load between the 1st and 150th cycles was measured. The percentage cut-through of each closure method versus standard closure was calculated. Results: The differences in the displacement between each of the polyester (1.01 mm), figure-of-eight (0.52 mm), peristernal (0.72 mm) and sternal band (0.66 mm) groups versus standard closure (0.22, 0.22, 2.1, 3.2 mm) in the paired samples were statistically significant (Student's paired t-test; P < 0.01). There were statistically significant differences in the percentage cut-through of polyester, figure-of-eight, peristernal and sternal bands (ANOVA, P < 0.001), versus standard closure. Conclusions: In our sheep sternum model, we have quantified the differing rate of cutting through bone of five types of median sternotomy closure techniques. We have controlled for bone variables by testing each closure versus standard closure using paired adjacent bone samples. Peristernal and sternal band closure techniques are significantly superior to standard closure. The use of polyester and figure-of-eight closures requires caution.en_GB
dc.publisherOxford University Pressen_GB
dc.subjectSternum -- Surgeryen_GB
dc.titleFatigue testing median sternotomy closuresen_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.en_GB
dc.publication.titleEuropean Journal of Cardio-Thoracic Surgeryen_GB
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