Absorbable Mg surgical tack: Proof of concept & in situ fixation strength. (September 2019)

• Record Type: Journal Article
• Authors: Johnston, Sean; Lau, Cora; Dargusch, Matthew S.; Atrens, Andrej
• Is Part Of: Journal of the mechanical behavior of biomedical materials. Volume 97(2019)
• Page Start: 321
• Page End: 329
• Publication Date: 2019-09
• Subjects: Magnesium -- Surgical tack -- Laparoscopic -- Hernia; Biomedical materials -- Periodicals; Biomedical materials -- Mechanical properties -- Periodicals; Biomedical materials; Biomedical materials -- Mechanical properties; Periodicals; Electronic journals; 610.28
• DOI: 10.1016/j.jmbbm.2019.05.035
• Languages: English
• ISSNs: 1751-6161

Abstract

Abstract: A prototype magnesium (Mg) surgical tack is tested comparatively against commercially available tacks made of titanium (ProTack tm, Medtronic) and PLGA (AbsorbaTack tm, Medtronic). The pull-out force is measured in situ in a lap-shear pull-out test, using porcine abdominal muscle tissue as a model. The Mg tack had a pull-out force comparable to those of the commercially available tacks. The majority of the Mg tacks also had a more ductile failure mode (i.e. the tacks deformed prior to failure), compared to the commercial tacks which pulled directly from the tissue with no deformation. The Mg tacks deformed as they were removed from the tissue, causing less damage to the tissue in the process. This is the first reported use of a Mg alloy in this application, and the proof of concept indicates that this is an area that deserves further interest and study. Graphical abstract: Image 1 Highlights: A Prototype magnesium (Mg) surgical tack is developed. This is the first reported use of this material in this application. Fixation strength tested in an in situ pull-out test using porcine tissue. Mg tack compared to commercially available titanium and PLA tacks. Prototype Mg tack performed comparably to commercial alternatives.