Ossification of the Human Fetal Ilium

Delaere, O.; Kok, V.; Behets, Catherine; Dhem, Antoine

doi:10.1159/000147271

Cited by 25 publications

(30 citation statements)

References 8 publications

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“…1992). This initial appositional ossification is probably initiated in response to the early reflex contraction of the gluteal and iliacus muscles on the respective gluteal and pelvic surfaces of the ilium (Laurenson, 1964b; Delaere et al. 1992; Scheuer & Black, 2000).…”

Section: Introductionmentioning

confidence: 99%

Iliac cortical thickness in the neonate – the gradient effect

Cunningham

Black

2009

Journal of Anatomy

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Recent studies of the neonatal ilium are beginning to reveal that a recognizable structural patterning of trabecular bone is present in the absence of any direct stance-related weight transfer. However, little is known about the organization of compact bone in the ilium and the way in which it is laid down during the earliest stages of development. This study investigates cortical bone thickness across both gluteal and pelvic iliac shells in the human neonatal ilium. Measurements of specific regions of interest on the iliac cortices were recorded using reconstructed microcomputed tomography scans from 30 neonatal ilia. Analysis of gluteal and pelvic cortical thicknesses revealed a distinctive patterning consistent with the expected bone distribution achieved through early bone modelling and remodelling. The analysis of this pattern is important for understanding the relationship between trabecular bone patterning and cortical bone structure in the earliest stages of pelvic development prior to locomotive influences and its response to the specific functional forces acting during this period.

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Section: Introductionmentioning

confidence: 99%

Iliac cortical thickness in the neonate – the gradient effect

Cunningham

Black

2009

Journal of Anatomy

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“…As late as at the age of 16–18 years, these three bones fuse onto one coxal bone and contribute to a socket of the hip joint, i.e., the acetabulum. From a clinical point of view, the development of the hip joint presents a common interest in sports medicine, manual therapy, biomechanics, and anthropology [10, 12]. …”

Section: Introductionmentioning

confidence: 99%

“…Among the three constituents of the coxal bone, the ilium is the first to ossify at week 9 of gestation [9, 10]. The ossification process of the ischium and pubis commences as late as at weeks 18 and 20, respectively [10, 18].…”

Section: Introductionmentioning

confidence: 99%

“…Although the timing of ossification of each constituent of the coxal bone has accurately been identified [9, 10, 13, 15, 18], to date, no morphometric measurements of the ischium’s primary ossification centers have been reported. Our study may provide numerous pieces of information valuable for the early diagnostics of normal and abnormal development of the skeletal system in human fetuses.…”

Section: Introductionmentioning

confidence: 99%

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The primary ossification of the human fetal ischium: CT, digital-image analysis, and statistics

et al. 2018

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PurposesDetails concerning the normal growth of the pelvic girdle in the fetus are of importance in the early detection of congenital defects. This study was executed to quantitatively evaluate the primary ossification center of the ischium with relation to its linear, planar and volumetric parameters.Materials and methodsUsing methods of CT, digital-image analysis, and statistics, geometrical dimensions of the ischium’s primary ossification center in 42 spontaneously aborted human fetuses (21 ♂ and 21 ♀) aged 18–30 weeks were calculated.ResultsWith no sex and laterality differences, the best fit growth dynamics for the ischium’s primary ossification center were displayed by the following functions: y = − 10.045 + 0.742 × age ± 0.013 (R2 = 0.97) for its vertical diameter, y = − 5.212 + 0.385 × age ± 0.008 (R2 = 0.97) for its sagittal diameter, y = − 36.401 + 0.122 × (age)2 ± 45.534 (R2 = 0.96) for its projection surface area, and y = − 1052.840 + 368.470 × ln(age) ± 12.705 (R2 = 0.91) for its volume.ConclusionsNeither male–female nor right–left differences are found for any of the morphometric parameters of the ischium’s primary ossification center. With relation to fetal ages in weeks, the ischium’s primary ossification center grows proportionately in vertical and sagittal diameters, second-degree polynomially in projection surface area, and logarithmically in volume. The quantitative findings of the ischium’s primary ossification center are considered age-specific reference data of relevance in the diagnostics of innate defects.

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“…The iliac center appears above the greater sciatic notch prenatally at about the ninth week and the ischial center appears in the body during the fourth and fifth months (Delaere et al, 1992). At birth, some parts of the pelvic bone are still cartilaginous: the iliac crest and the floor and inferior margin of the acetabulum.…”

Section: Introductionmentioning

confidence: 99%

Avulsion fracture of the pelvis: Separation of the secondary ossification center in the superior margin of the acetabulum

et al. 2003

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A 13-year-old female sustained a rare avulsion fracture of the secondary ossification center in the superior margin of the acetabulum as the result of contraction of the reflected head of the rectus femoris muscle. Diagnosis was made from plain films and CT scans with 3D image reconstruction. The patient was treated non-operatively by bed rest with semiflexion of the hip and knee, and appropriate analgesia.

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Ossification of the Human Fetal Ilium

Cited by 25 publications

References 8 publications

Iliac cortical thickness in the neonate – the gradient effect

Iliac cortical thickness in the neonate – the gradient effect

The primary ossification of the human fetal ischium: CT, digital-image analysis, and statistics

Avulsion fracture of the pelvis: Separation of the secondary ossification center in the superior margin of the acetabulum

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