title: Stability of the human spine: a biomechanical study.
abstract: The influences of curvatures and of physical properties on the mechanical stability of the spine were analysed by means of a three-dimensional, geometrical, nonlinear biomechanical model. According to the model, the initial buckling load decreases with increasing lordotic and kyphotic curvatures. When the body weight is taken into account as a load distributed along the whole spine, the calculated initial buckling load is twice the value that it is in the case of a single concentrated load acting at the top of the spine. Applying the large deflection theory, no relation is found between the increased slenderness of a spine and a 'buckled' configuration of a scoliotic spine.
authors.affiliation: Department of Orthopaedics, State University, Groningen, The Netherlands.
authors.forename: P J
authors.initials: PJ
authors.lastname: Scholten
authors.forename: A G
authors.initials: AG
authors.lastname: Veldhuizen
authors.forename: H J
authors.initials: HJ
authors.lastname: Grootenboer