We examined the axial skeleton in 15 human triploid fetuses (10 with XXX and 5 with XXY sex chromosomes). All fetuses 14-29 weeks of gestational age (GA), underwent wholebody radiography, permitting analysis of the nasal bone and the spine. From 9 of these, detailed radiographs were taken of midsagi
Growth patterns in the modern human skeleton
β Scribed by Humphrey, Louise T.
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 121 KB
- Volume
- 105
- Category
- Article
- ISSN
- 0002-9483
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β¦ Synopsis
This study investigates cross sectional growth patterns in the human skeleton using a recent skeletal sample of known age and sex. Measurements were selected to reflect different functional regions of the cranium, mandible and post cranial skeleton, and growth is evaluated using a single phase Gompertz curve. Different parts of the skeleton vary in the proportion of adult size attained at birth and in their subsequent rate of attainment of adult size. The paper introduces a method for the objective and quantitative comparison of the growth of different samples, and is used in this instance to analyze sexual differences in the growth of the post cranial skeleton. The development of sexual dimorphism is evaluated in terms of differences in the rate and duration of male and female growth. Adult sexual dimorphism is generally lower in early growing variables than in latergrowing variables. There is considerable diversity in the ontogenetic basis of sexual dimorphism in the human skeleton demonstrating that the development of sexual dimorphism within a species should not be regarded as a uniform phenomenon.
π SIMILAR VOLUMES
In the present study, we analyzed the development of the axial skeleton in human trisomy 21 fetuses and defined the fields in the axial skeleton affected in this form of aneuploidy. We investigated 31 human fetuses with trisomy 21, gestational ages 12-24 weeks, on the basis of radiographs of midsagi
We examined and described the development and abnormalities of the axial skeleton in 10 human trisomy 18 fetuses. Whole-body radiographs and radiographs of midsagittal tissue blocks of the cranial base and the spine were studied. In 3 fetuses no spinal radiographs were available. Seven osseous regio