Mathematical Modeling of Changes in ‘Lumbosacral Region of the Spine–Pelvis’ Kinematic Chain in Iliolumbar Ligament Syndrome

Abstract

The pain in the lower back in several ocasions can be caused by iliolumbar ligament pathology. At a certain stage of pathogenesis of iliolumbar ligament syndrome recurring microtraumas of its fiber cause to their fibrosis that has an influence on stiffness of injured structure and biomechanics of kinematic chain ‘lumbosacral region of the spine–pelvis’. With a view to substantiating pathogenetic role of stiffness increase of iliolumbar ligament in pain formation in the lower back, by us there were made investigations of stress-strain state of kinematic chain ‘lumbosacral region of the spine–pelvis’ in iliolumbar ligament syndrome.