title: The study of physicochemical properties of stabilizing plates removed from the body after treatment of pectus excavatum.
abstract: This paper presents the results of a physicochemical surface study and clinical observation of a new generation of plates for the treatment of pectus excavatum. Analysis of the data allowed us to investigate the effect of implant design and condition of their surface on the results of treatment of pectus excavatum. In the study, we performed an analysis of clinical data, obtained after a suitable period of treatment with the use of implants, as well as a study of physicochemical properties of stabilizing plates after their removal from the body. Surface roughness, the surface wettability and corrosion resistance were measured, and the results were compared with clinical observations. When removing the plates we found only slight inflammatory-periosteal reactions around the wire fixing transverse stabilizing plates to the ribs and locking the base plate correcting the distortion. The corrective plates did not shift or rotate during the entire treatment period, giving an optimal, oval and natural shape of the chest. The obtained values of the parameters investigated indicate that the reduction in resistance to pitting corrosion occurred in the areas where laser marking was made to identify the plate. The remaining plates, in spite of mechanical damage of the surface, were characterized by good corrosion resistance, a fact which is confirmed by the results of clinical evaluation.
authors.affiliation: Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland.
authors.forename: Anita
authors.initials: A
authors.lastname: Kajzer
authors.affiliation: Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Kajzer
authors.affiliation: Medical University of Silesia, School of Medicine in Katowice, Katowice, Poland.
authors.forename: Józef
authors.initials: J
authors.lastname: Dzielicki
authors.affiliation: Department of Biomaterials and Medical Devices Engineering, Faculty of Biomedical Engineering, Silesian University of Technology, Zabrze, Poland.
authors.forename: Dawid
authors.initials: D
authors.lastname: Matejczyk
mesh_terms: D000293:Adolescent; D000328:Adult; D001672:Biocompatible Materials / Q000737:chemistry*; D001860:Bone Plates / Q000145:classification*; D002858:Chromium Alloys / Q000737:chemistry*; D003343:Corrosion; D055119:Elastic Modulus; D019544:Equipment Failure Analysis; D005260:Female; D005660:Funnel Chest / Q000628:therapy*; D006244:Hardness; D006801:Humans; D008297:Male; D008422:Materials Testing; D011474:Prosthesis Design; D017155:Wettability; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D002858:Chromium Alloys