title: [Mechanical changes in bone after roentgen irradiation with low dosage].
abstract: We investigated the micromechanical properties using doses from 1 up to 7 Gray and could observe a roughening on the surface of the bone material in the microscopic range by scanning acoustic microscopic measurements. In addition, a preceding irradiation promoted an extension of microcracks during the polishing process indicating an embrittlement. After irradiation and removal of the surface layer, the SAM measurements indicate a preferential increasing of hardness of softer regions. These results are consistent with our measurements by environmental scanning electron microscopy.
authors.affiliation: A.G. Biomechanik & Strukturforschung, Klinik und Poliklinik für Orthopädie, Martin-Luther-Universität Halle-Wittenberg.
authors.forename: I
authors.initials: I
authors.lastname: Eckardt
authors.forename: S
authors.initials: S
authors.lastname: Henning
authors.forename: F
authors.initials: F
authors.lastname: Syrowatka
authors.forename: R
authors.initials: R
authors.lastname: Gerlach
authors.forename: H J
authors.initials: HJ
authors.lastname: Hein
mesh_terms: D000368:Aged; D004307:Dose-Response Relationship, Radiation; D005269:Femur / Q000473:pathology / Q000528:radiation effects; D006244:Hardness; D006801:Humans; D008297:Male; D008855:Microscopy, Electron, Scanning; D010025:Osteoradionecrosis / Q000473:pathology*; D013499:Surface Properties; D014965:X-Rays / Q000009:adverse effects*