Research On Key Parameters Of Non-surgical Cervical Spine Traction Treatment

Cervical spondylosis is a major killer which threatens human’s health and lives seriously, traction treatment is the preferred method for non-surgical therapy of cervical spondylosis. Due to the fact that human cervical spine shows a certain physiological curvature, the traditional cervical traction devices can tract patients only in axial direction. This results in many problems such as single traction angle, low control accuracy on traction force size, lack of traction time setting theory, therapy effects excessive depending on the doctor’s experience and practices. Therefore, it is important to develop a new type of cervical traction treatment device and research on the related parameters during the cervical traction.A new type of non-surgical cervical traction treatment device is studied in this paper, its working principle and the overall design are introduced, the related parameters are determined by analysis during cervical traction therapy. First of all, the optimum cervical traction force range is determined by consulting a large number of related literature combining with the characteristics and clinical therapeutic effects of the cervical traction treatment device. Then, based on cervical vertebra medical CT scan data, the Mimics(a kind of medical image processing software) and Geomagic Studio(a kind of reserve engineering software) are used to build the solid model of cervical vertebra and intervertebral disc in this paper, and the model is imported to the finite element analysis software Ansys Workbench, the C2-C7 three-dimensional finite element model of cervical vertebra containing tissues like ligaments, annulus fibrosus and nucleus pulposus is established successfully, and the effectiveness of this model is verified with the related experimental data. The finite element simulation analysis is made by using this model, the best traction angles are got. In the end, the mechanical model of human cervical disc is given by theoretical analysis in this paper, the equations of disc stress relaxation and creep are deduced, the curves of disc stress relaxation and creep are fitted, and the best time for cervical traction is explored and identified compared with related experimental data.The non-surgical cervical traction therapy device in this paper can not only realize angle traction therapy of cervical spondylosis in clinical application, but also provide an important reference for the future improvement of cervical traction devices. In addition, the research on the therapy parameters provides a theoretical basis and guidance for the clinical therapy of cervical spondylosis.