Modeling the appropriate sleep system and the spine of the patients who suffer from ankylosing-spondylitis, designing and excluding the mattress stiffness cartography according to their sex and body shape

摘要

Ankylosing spondylitis, or AS, is a form of arthritis that primarily affects the spine, although other joints can become involved. It causes inflammation of the spinal joints (vertebrae) that can lead to severe, chronic pain and discomfort especially in sleep time so it could reduce their sleep quality. In most usual sleep system, we have the same stiffness through their mattress materials. Recent studies show that this type of sleep system is not suitable even for a healthy person and it is recommended to design a suitable one for every one due to their body shape and sex type. In this article, we are trying to design and model a suitable sleep system for patients who suffer from AS, and the first goal is to give them this opportunity to have more comfort and less pain when they are sleeping. In addition, modeling of their spine is included in this research. This model has different stiffness through the surface and it is depend on the best posture of sleep for these people.