Studies on Head Molding During Labor

Moloy, Howard C.

doi:10.1016/s0002-9378(15)30603-7

Cited by 47 publications

(18 citation statements)

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“…This had been suspected previously based on radiological studies, (11, 12) and was suggested in one prospective study from the 1970s (3). The findings here also support the view that lambdoid suture overlap is a normal intrapartum phenomenon, (13, 14) and should not be used to justify a diagnosis of CPD. Lambdoid sutures could only be palpated in about two‐thirds of examinations owing to deflexion of the fetal head.…”

Section: Discussionsupporting

confidence: 84%

Sagittal suture overlap in cephalopelvic disproportion: Blinded and non‐participant assessment

Buchmann

Libhaber

2008

Acta Obstet Gynecol Scand

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Section: Discussionsupporting

confidence: 84%

Sagittal suture overlap in cephalopelvic disproportion: Blinded and non‐participant assessment

Buchmann

Libhaber

2008

Acta Obstet Gynecol Scand

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“…If such a short-term increase in cranial base angulation is present and is reversed shortly after birth, a temporary deformation rather than a true growth change is suggested. Increase in the cranial base angulation may be associated with moulding of the skull both prior to birth and during birth (Moloy, 1942). A cephalometric study of cranial base angulation from immediately after birth to 3 months showed inconclusive results with no change in onethird, decreases in one-third, and questionable decreases in one-third of the heads (Ortiz and Brodie, 1949).…”

Section: Development Of the Cranial Basementioning

confidence: 99%

A morphometric analysis of craniofacial growth and changes in spatial relations during secondary palatal development in human embryos and fetuses

Diewert

1983

Am. J. Anat.

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Staged human embryos and fetuses in the Carnegie Embryological Collection were morphometrically analyzed to show craniofacial dimensions and changes in spatial relations, and to identify patterns that would reflect normal developmental events during palatal formation. Normal embryos aged 7-8 weeks postconception (Streeter-O'Rahilly stages 19-23) and fetuses aged 9-10 weeks postconception, in eight groups with mean crown-rump (CR) lengths of 18-49 mm, were studied with cephalometric methods developed for histologic sections. In the 4-week period studied, facial dimensions increased predominantly in the sagittal plane with extensive changes in length (depth) and height, but limited changes in width. Growth of the mandible was more rapid than the nasomaxillary complex, and the length of Meckel's cartilage exceeded the length of the oronasal cavity at the time of horizontal movement of the shelves during stage 23. Simultaneously with shelf elevation, the upper craniofacial complex lifted, and the tongue and Meckel's cartilage extended forward beneath the primary palate. Analysis of spatial relations in the oronasal cavity showed that the palatomaxillary processes became separated from the tongue--mandibular complex as the head extended, and the tongue became positioned forward with growth of Meckel's cartilage. As the head position extended by 35 degrees, the cranial base angulation was unchanged and the primary palate maintained a 90 degrees position to the posterior cranial base. However, the sagittal position of the maxilla relative to the anterior cranial base increased by 20 degrees between stages 19 and 23. In the late embryonic and early fetal periods, the mean cranial base angulation of approximately 128 degrees and the mean maxillary position angulation of approximately 84 degrees were similar to the angulations previously shown to be present later prenatally and post-natally. The results suggest that human patterns of cranial base angulation and maxillary position to the cranial base develop during the late embryonic period when the chondrocranium and Meckel's cartilage form the primary skeleton.

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“…Furthermore, restitution of molding in heads which presented occiput anterior was noted to be faster than in those which presented occiput posterior. The first radiologic study of molding was reported in 1942, by MOLOY [8]. Skull films taken immediately after birth compared vaginal deliveries to cesarean sections.…”

Section: Curriculum Vitaementioning

confidence: 99%

Neonatal head shape after delivery: An index of molding

Kriewall¹,

Stys²,

McPherson³

1977

Journal of Perinatal Medicine

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Molding at parturition, äs perceived subjectively, ranges from no reshaping to marked distortion of the infant's head. While clinicians easily recognize ,the highly molded head, there are no criteria for quantitating the degree of molding. The purpose of the present study is to describe quantitatively neonatal skull molding and the restitution of the newborn's skull from the molded state during the early neonatal period.

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Studies on Head Molding During Labor

Cited by 47 publications

References 0 publications

Sagittal suture overlap in cephalopelvic disproportion: Blinded and non‐participant assessment

Sagittal suture overlap in cephalopelvic disproportion: Blinded and non‐participant assessment

A morphometric analysis of craniofacial growth and changes in spatial relations during secondary palatal development in human embryos and fetuses

Neonatal head shape after delivery: An index of molding

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