Title :
Developmental and corrective biomechanics for scoliosis
Author :
Noone, G.P. ; Mazumdar, J. ; Ghista, D.N.
Author_Institution :
Adelaide Univ., SA, Australia
fDate :
6/1/1991 12:00:00 AM
Abstract :
The developmental mechanism for scoliosis and its surgical correction are studied by modeling the spinal column as a curved nonlinear (large-deformation-sustaining) beam column to which are applied (a) muscle forces to simulate scoliosis development due to asymmetrical bilateral muscle contractions and (b) corrective forces to simulate the action of surgically implanted corrective systems. The two-dimensional model permits curvature in the frontal plane and can simulate and demonstrate the progression of a scoliotic curve from an initially straight configuration for various model parameter values. The calculation of the bonding moments is treated, and a simple algorithm for solving the model equations is presented. Results for an actual clinical case are given.<>
Keywords :
biomechanics; bone; physiological models; surgery; 2D model; asymmetrical bilateral muscle contractions; bonding moments; clinical case; corrective biomechanics; corrective forces; curved nonlinear beam column; developmental mechanism; large-deformation-sustaining column; model equations; model parameter values; scoliosis; spinal column modeling; surgical correction; Analytical models; Back; Biomechanics; Contracts; Deformable models; Finite element methods; Muscles; Power system modeling; Spine; Surgery;
Journal_Title :
Engineering in Medicine and Biology Magazine, IEEE
