In vitro biomechanical study of female geriatric cervical vertebral bodies. J Biomed Eng 1990 Mar;12(2):97-101
Date
03/01/1990Pubmed ID
2319771DOI
10.1016/0141-5425(90)90127-9Scopus ID
2-s2.0-0025400259 (requires institutional sign-in at Scopus site) 15 CitationsAbstract
Compressive strength tests were conducted on fresh human geriatric female cervical vertebral bodies. Nineteen specimens were compressed to 50% of their initial height using an electrohydraulic testing device. The mechanical force-deflection response was sigmoidal with continuously changing resistance. The mean cross-sectional area and bone mineral content (BMC) of the vertebral bodies progressively increased from C3 (area: 333.8 mm2, BMC: 1.56 g) to C6 (area: 499.7 mm2, BMC: 2.18 g). The maximum compressive force increased from 1060 N at C3 to 1787 N at C6. The stiffness and the energy absorbed at failure also increased from C3 to C6 (stiffness: 279.95 to 556.41 N mm-1, energy: 2.45 to 4.16 J). These parameters demonstrated a decreasing tendency from C6 to C7. The relatively higher biomechanical parameters at the sixth vertebral level compared with its caudad and cephalad counterparts may be due to the fact the transition of the cervical lordosis to thoracic kyphosis begins at this level. Furthermore, the change in the anatomy of the unicinate processes in the cervical column around this region may also be a contributing factor.
Author List
Yoganandan N, Pintar F, Wilson CR, Sances A JrAuthors
Frank A. Pintar PhD Chair, Professor in the Biomedical Engineering department at Medical College of WisconsinNarayan Yoganandan PhD Professor in the Neurosurgery department at Medical College of Wisconsin
MESH terms used to index this publication - Major topics in bold
AgedAged, 80 and over
Aging
Biomechanical Phenomena
Bone Density
Cervical Vertebrae
Female
Humans
Reference Values