The Adult Spinal Column :: Biology, Tissues

AbstractUnderstanding the relationship between repetitive lifting and the breakdown of platter tissue over several years of exposure is difcult to take on in vivo and in vitro. The aim of this investigation was to develop an asymmetric Porovisco waxy nite element model of a lumbar motion segment that reects the biological properties and behaviors of in vivo criminal record Finite element predictions were compared to in vivo measurements produce by Tyrrell et al. (1985) of percent change in total stature for two loading protocols, short-term creep loading and standing recovery and short-term cyclic loading with standing recovery. Future models will treat the tissues as poor-assume elastic and 3D in order to be more precise and the relationship between repetitive lifting and disc degeneration TI. triggerhe adult spinal column is made up of 26 bones, called vertebrae 7 cervical in the neck, 12 thoracic in the rib area, 5 lumbar in the lower back, a sacrum and a coccyx. situated between adjacent vertebrae are intervertebral discs. The human intervertebral disc acts as the bodys shock absorber to properly diffuse the stresses that the thorn encounters. It is made up of the inner, gel-like nucleus pulposus and the outer annulus fibrosus. Fluid flows finished the disc in a diurnal cycle At the begin of each day, the disc is fully hydrated, but as the day progresses, wandering is forced to flow out of the disc this flow helps to carry nutrients into and furious out of the disc 1. The exploration of biomechanical properties of living tissues is fundamental to the analysis of geomorphological behaviour of the musculoskeletal system. It is known that mechanical properties of living tissues are age dependent. Creep, relaxation, constant strain rate loading, and cyclic loading represent the heterogeneous physiological loading conditions that the human body confronts. For example, higher strain evaluate of loading can be used for simulating vehicular accidents or trauma, average strain rates of loading for daily activity, creep for the prolonged dormant posture, and cyclic loading for work in vibrating environments, i.