title: Materials characterization of explanted polypropylene hernia mesh: Patient factor correlation.
abstract: This study quantitatively assessed polypropylene (PP) hernia mesh degradation and its correlation with patient factors including body mass index, tobacco use, and diabetes status with the goal of improving hernia repair outcomes through patient-matched mesh. Thirty PP hernia mesh explants were subjected to a tissue removal process followed by assessment of their in vivo degradation using Fourier transform infrared, differential scanning calorimetry, and thermogravimetric analysis analyses. Results were then analyzed with respect to patient factors (body mass index, tobacco use, and diabetes status) to determine their influence on in vivo hernia mesh oxidation and degradation. Twenty of the explants show significant surface oxidation. Tobacco use exhibits a positive correlation with modulated differential scanning calorimetry melt temperature and exhibits significantly lower TGA decomposition temperatures than non-/past users. Chemical and thermal characterization of the explanted meshes indicate measurable degradation while in vivo regardless of the patient population; however, tobacco use is correlated with less oxidation and degradation of the polymeric mesh possibly due to a reduced inflammatory response.
authors.affiliation: Department of Bioengineering, University of Missouri, USA.
authors.forename: Sarah E
authors.initials: SE
authors.lastname: Smith
authors.affiliation: Department of Bioengineering, University of Missouri, USA.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Cozad
authors.affiliation: Department of Bioengineering, University of Missouri, USA.
authors.forename: David A
authors.initials: DA
authors.lastname: Grant
authors.affiliation: Advanced Hernia Solutions, FL, USA.
authors.forename: Bruce J
authors.initials: BJ
authors.lastname: Ramshaw
authors.affiliation: Department of Bioengineering, University of Missouri, USA grantsa@missouri.edu.
authors.forename: Sheila A
authors.initials: SA
authors.lastname: Grant
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry; D015992:Body Mass Index; D002152:Calorimetry, Differential Scanning; D048909:Diabetes Complications / Q000175:diagnosis; D006547:Hernia / Q000628:therapy*; D059685:Herniorrhaphy / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008422:Materials Testing; D009765:Obesity / Q000150:complications; D010100:Oxygen / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D011126:Polypropylenes / Q000737:chemistry*; D011138:Polytetrafluoroethylene / Q000737:chemistry; D019736:Prostheses and Implants; D012086:Reoperation; D012907:Smoking; D017550:Spectroscopy, Fourier Transform Infrared; D013526:Surgical Mesh; D013696:Temperature; D013818:Thermogravimetry
chemical_list: D001672:Biocompatible Materials; D011108:Polymers; D011126:Polypropylenes; D011138:Polytetrafluoroethylene; D010100:Oxygen
keywords: Fourier transform infrared spectroscopy; Polypropylene; differential scanning calorimetry; oxidation; surgical mesh