The elongation of the human cervical vertebral column
โ Scribed by A. F. Roche
- Publisher
- John Wiley and Sons
- Year
- 1972
- Tongue
- English
- Weight
- 563 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0002-9483
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โฆ Synopsis
Cervical vertebral elongation has been studied using serial cephalometric radiographs of 32 children examined regularly from 0.25 to 17 years. Mean vertebral body heights increased rapidly to about 2.5 years and then decelerated except for a spurt at about the age of peak height velocity. There were only small sex differences in vertebral body elongation to 12 years. From then to 15 years, the vertebral body heights i n the girls exceeded those in the boys; later this sex difference was reversed. There was no pubertal spurt in disc elongation. The correlation coefficients were negative between vertebral body heights and the heights of adjoining intervertebral discs, e.g., body C 3 and disc C3-4, but those between body heights or between disc heights were positive. The heights of adjacent cervical vertebral bodies were correlated more highly than the heights of non-adjacent bodies. There was a similar pattern of differences between correlation coefficients for the heights of adjacent and nonadjacent intervertebral discs.
๐ SIMILAR VOLUMES
The pattern of innervation of the caudal thoracic and cranial lumbar vertebral column of the dog is described. Frozen sections stained with Schofield's silver impregnation method show that the dorsal longitudinal ligament is profusely innervated, while the anulus fibrosus contains a few nerves limit