Abstract
We investigated the stress conditions and growth deformation behaviors in the vertebral body using the growth strain method. The growth criterion parameters of the 3,4,5th lumbar vertebras were determined by applying two-dimensional finite element method. Next, growth-strain analysis of the 3,4,5th lumbar vertebras was performed for various loading conditions under the growth criterion parameters of each lumbar vertebra. Our findings showed that the shape of the intervertebral disc markedly changed according to the loading conditions and the hernia occurred.