腰部単純X線写真による脊椎管形態の推察 (第1報)

抄録

The aim of this study is to evaluate the spinal canal configuration by comparison of direct measurements of dried specimens of the vertebrae with the measurements on those x-ray films (62 vertebrae of 20 individuals).
We measured the superior vertebral notch distance (A), the distance between medial cross points of articular facets (B), and interpedicular distance (C).
As result of these measurements, three configuration of spinal canal were classified as follows.
1) Those vertebrae with less than 4.5mm in A and 67% in B/C×100 had trefoil canal.
2) Those vertebrae with less than 4mm in A and over than 80% in B/C×100 had triangular canal.
3) Those vertebrae with over than 6.5mm in A had deltoid or oval canal.