Hydromechanics and applied anatomy for the treatment of the cervical spondylosis with the vertebral artery type using rotation manipulation

Objective To provide applied anatomy basis and hydromechanics data for treatment of the cervical spondylosis with the vertebral artery type (CSA) with rotation manipulation Methods The cervical vertebrae and vertebral artery (VA) in 31 adult cadavers were observed and measured.Two fresh samples of them were selected for study of the hydromechanisc.Results ①The distance between both is the largest in C 2,and smallest in C 5.②The distance from VA to the lateral border of C 2,3 intervertebral disc is the largest.③The height of the transverse foramen is C 5?C 6C 2?C 3,C 6C 4C 3.The distance from upper transverse foramen to lower one is C 1,2C 2,3?C 3,4?C 4,5?C 5,6.④Cervical disc thickness is C 5,6?C 6,7C 2,3,C 3,4,C 5,6C 4,5.⑤Antefleixion of the cervical vertebrae lead to the decrease of the dropping amount of drainage tubes of both VA.The dropping amount of drainage tubes of both VA decreases at the certain degree of the vertebral rotation,even stops at the maximum rotation.Conclusion The rotation manipulation was helpful to treat pathological changes in C 1?C 2?C 3.However,it should be adjusted properly when the pathological changes took place in the both sides of VA and the lower cervical vertebrae.The strong manipulation with large rotation should be avoided.