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Quantitative study of the primary ossification center of the parietal bone in the human fetus
Affiliations- Department of Normal Anatomy, the Ludwik Rydygier Collegium Medicum in Bydgoszcz, the Nicolaus Copernicus University in Torun, Poland
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Abstract
Detailed morphometric data concentrating on the development of primary ossification centers in human fetuses is critical for the early detection of developmental defects. Thus, an understanding of the growth and development of the parietal bone is crucial in assessing both the normal and pathological development of the calvaria. The size of the parietal primary ossification center in 37 spontaneously aborted human fetuses of both sexes (16 males and 21 females) aged 18–30 weeks was studied by means of CT, digital-image analysis and statistics. The numerical data of the parietal primary ossification center in the human fetus displays neither sex nor laterality differences. With relation to fetal age in weeks, the parietal primary ossification center grew in sagittal diameter according to the quadratic function y = 16.322 + 0.0347 × (age)2 ± 1.323 R2 = 0.96, in projection surface area according to the cubic function
y = 284.1895 + 0.051 × (age)3 ± 0.490, while in both coronal diameter and volume according to the quartic functions: y = 21.746 + 0.000025 × (age)4 ± 1.256 and y = 296.984 + 0.001 × (age)4, respectively. The obtained morphometric data of the parietal primary ossification center may be considered age-specific references, and so may contribute to the estimation of gestational ages and be useful in the diagnostics of congenital cranial defects.
Abstract
Detailed morphometric data concentrating on the development of primary ossification centers in human fetuses is critical for the early detection of developmental defects. Thus, an understanding of the growth and development of the parietal bone is crucial in assessing both the normal and pathological development of the calvaria. The size of the parietal primary ossification center in 37 spontaneously aborted human fetuses of both sexes (16 males and 21 females) aged 18–30 weeks was studied by means of CT, digital-image analysis and statistics. The numerical data of the parietal primary ossification center in the human fetus displays neither sex nor laterality differences. With relation to fetal age in weeks, the parietal primary ossification center grew in sagittal diameter according to the quadratic function y = 16.322 + 0.0347 × (age)2 ± 1.323 R2 = 0.96, in projection surface area according to the cubic function
y = 284.1895 + 0.051 × (age)3 ± 0.490, while in both coronal diameter and volume according to the quartic functions: y = 21.746 + 0.000025 × (age)4 ± 1.256 and y = 296.984 + 0.001 × (age)4, respectively. The obtained morphometric data of the parietal primary ossification center may be considered age-specific references, and so may contribute to the estimation of gestational ages and be useful in the diagnostics of congenital cranial defects.
Keywords
parietal bone, bone development, osteogenesis, fetal development
About this articleTitle
Quantitative study of the primary ossification center of the parietal bone in the human fetus
Journal
Issue
Article type
Original article
Published online
2022-02-28
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252
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169
DOI
10.5603/FM.a2022.0020
Pubmed
Keywords
parietal bone
bone development
osteogenesis
fetal development
Authors
M. Grzonkowska
M. Baumgart
M. Badura
M. Wiśniewski
M. Szpinda
