Principles and practice of spinal adjustment; for the use of students and practitioners . this nerve produces vaso-motor disturbances within the cord as well as in the meningesand bone. In an occipito-atlantal subluxation the superior cervicalganglion is compressed by the transverse process and vaso-motor changes in the vessels of the brain, eyes, and meningesresult. Anemia or hyperemia of the brain will follow. In a posterior displacement of the occiput on the atlas thesame general rules must be followed, in fact this must be donein all cases regardless of the location of the
Principles and practice of spinal adjustment; for the use of students and practitioners . this nerve produces vaso-motor disturbances within the cord as well as in the meningesand bone. In an occipito-atlantal subluxation the superior cervicalganglion is compressed by the transverse process and vaso-motor changes in the vessels of the brain, eyes, and meningesresult. Anemia or hyperemia of the brain will follow. In a posterior displacement of the occiput on the atlas thesame general rules must be followed, in fact this must be donein all cases regardless of the location of the main points of comparison are the transverse processesof the atlas with the mastoid processes, and the posteriortubercle of the atlas with the external occipital protuberance. In making an examination for an occipital displacementthe relation of the atlas to the axis must also be determined,as in such a subluxation there will be some displacement ofthe suspensory and check ligaments which connect the axiswith the occiput. There will also be present the same con- 306 SPINAL ADJUSTMENT. Fig. of Cervical Vertebrae. SPINAL ANALYSIS 307 traction of the ligaments which unite the atlas and the occipitalbone as are found in other regions of the spine when thelaminae are palpated. The unilateral contraction of theseligaments is readily determined. It must be remembered further that the cartilage whichseparates the atlas from the occipital bone and from the axisresembles hyaline cartilage, and is not of the same fibro-cartilaginous quality as is that which composes the discswhich are placed between the other vertebrae. In case oftilting or any displacements in which a space is left betweenthe articular surfaces, the cartilage may thicken and whenthis occurs the displacement will resist correction for a greaterlength of time. In a lateral displacement it will be found that the trans-verse process on the side which is displaced downward isnearer the mastoid process, while on
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