title: Characterization methods of bone-implant-interfaces of bioresorbable and titanium implants by fracture mechanical means.
abstract: Bioresorbable materials for implants have become increasingly researched over the last years. The bone-implant-interfaces of three different implant materials, namely a new bioresorbable magnesium alloy, a new self-reinforced polymer implant and a conventional titanium alloy, were tested using various methods: push-out tests, SEM and EDX analyses as well as surface analyses based on stereoscopic 3D pictures were conducted. The fracture energy is proposed as a very significant reference value for characterizing the mechanical performance of a bone-implant system. By using a video-extensometer system instead of, as is commonly done, tracking the movement of the crosshead in the push-out tests, the accuracy of measurement could be increased.
authors.affiliation: Institute for Building Construction and Technology E-206-4, Vienna University of Technology, Karlsplatz 13, 1040 Vienna, Austria.
authors.forename: E K
authors.initials: EK
authors.lastname: Tschegg
authors.forename: R A
authors.initials: RA
authors.lastname: Lindtner
authors.forename: V
authors.initials: V
authors.lastname: Doblhoff-Dier
authors.forename: S E
authors.initials: SE
authors.lastname: Stanzl-Tschegg
authors.forename: G
authors.initials: G
authors.lastname: Holzlechner
authors.forename: C
authors.initials: C
authors.lastname: Castellani
authors.forename: T
authors.initials: T
authors.lastname: Imwinkelried
authors.forename: A
authors.initials: A
authors.lastname: Weinberg
mesh_terms: D020341:Absorbable Implants; D000497:Alloys / Q000737:chemistry; D001842:Bone and Bones / Q000378:metabolism*; D019344:Lactic Acid / Q000737:chemistry; D008274:Magnesium / Q000737:chemistry; D008422:Materials Testing; D055595:Mechanical Phenomena; D011100:Polyglycolic Acid / Q000737:chemistry; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry* / Q000378:metabolism
chemical_list: D000497:Alloys; D000077182:Polylactic Acid-Polyglycolic Acid Copolymer; D011100:Polyglycolic Acid; D019344:Lactic Acid; D014025:Titanium; D008274:Magnesium