[Shear fracture stress of the spongiosa and pressure fracture stress of cortical bone of cadaveric vertebrae].
By biomechanic examinations of the vertebrae of human dead bodies the ultimate stress due to shearing (Schubbruchspannung) of the spongy substance could be found out with 1.80 N/mm2 and the ultimate stress due to compression (Druckbruchspannung) of the cortical-belonging to the thick of cortical--with 280 N/mm2. Both measuring results are important for the ultimate strength of the connection (Verankerungsfestigkeit) of screws in vertebae.
D000293:Adolescent; D000328:Adult; D001696:Biomechanical Phenomena; D001863:Bone Screws; D050723:Fractures, Bone / Q000503:physiopathology*; D006801:Humans; D008159:Lumbar Vertebrae / Q000293:injuries* / Q000503:physiopathology; D008875:Middle Aged; D013904:Thoracic Vertebrae / Q000293:injuries* / Q000503:physiopathology
Schubbruchspannung der Spongiosa und Druckbruchspannung der Kortikalis menschlicher Leichenwirbelkörper.