Olga Chabarova, Institute of Mechanical Science, Vilnius Gediminas Technical University, Lithuania, Biomechanical studies on instability of human vertebral column

Biomechanical studies on instability of human vertebral column

Biomechanical approach to the human spine instability problem is presented. Spinal instability or ‘loss in stability’ is a pathological process that may lead to abnormal displacements of the vertebral bones, compression of the nerves, and even to fracture of ligaments and compression fracture of the vertebrae. The elderly persons with osteoporosis are at the high risk of the instability development. Some surgical methods of treatment are discussed. A brief review of biomechanical approaches and rheological models is given. Numerical results based on the FEM computations on a model of the lumbar vertebra composed of a cortical shell and porous core are presented