メマイとX線写真にあらわれた頸椎変化について（その1）

X-RAY EVIDENCE OF PATHOLOGICAL CHANGES IN THE CERVICAL VERTEBRAE AND VERTIGO

　I．はじめに

　メマイを訴える症例において，しばしばその原因として，古くから頸部が問題にされてきている。頸性眩暈という疾患名をしばしば耳にするが，それが実際に何を意味するか明らかではない。頸部を構成するものには，項頸筋，血管，頸椎，頸部交感神経など種々あり，その各々につき諸家の研究が行なわれてしいる。われわれは，メマイ症例にたいし，ルーチンに頸部単純レントゲン写真をとつているが，今回は，頸椎の骨性変化に注目し，メマイとの関係を中心に考察を加えてみた。

　The term cervical vertigo seeks the cause of the pathology in cervical vertebrae; but, the mechanism of this condition has not been clearly established. At the Clinic of the Tokyo University Hospital, radiographic study of cervical vertebrae is adopted as a routine procedure in the examination of patients with complaints of vertigo. The authors present data in which the relation between the vertigo and the pathological changes occuring in the cervical vertebrae is shown by means of x-ray films. These changes were more frequently found in cases with complaints of vertigo than in those who were considered as normal. In cases of vertigo the changes were manifested particularly, in the vertebral body, the intervertebral disc and foramen; whereas, in the normal the changes were restricted mainly to the vertebral body. The authors conclude that the x-ray changes that may be found in the cervical vertebrae be regarded as a causative factor of the vertigo.