Related Experiment Video
Updated: Jun 25, 2026
08:03
Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
Published on: November 4, 2025
Predictors of severity in deformational plagiocephaly
Albert K Oh1, Erik A Hoy, Gary F Rogers
1Department of Plastic Surgery, Hasbro Children's Hospital and Rhode Island Hospital, Brown Medical School, Providence, Rhode Island, USA.
The Journal of Craniofacial Surgery
|February 5, 2009
Summary
Deformational plagiocephaly (DP) severity is linked to specific risk factors. Infant head tilt and cervical imbalance strongly correlate with cranial asymmetry, impacting DP severity.
Area of Science:
- Pediatric Orthopedics
- Craniofacial Development
- Infant Health
Background:
- Deformational plagiocephaly (DP) is a common infant condition.
- Several risk factors have been associated with DP, but their impact on severity requires further quantification.
Purpose of the Study:
- To determine the impact of various risk factors on the severity of deformational plagiocephaly (DP).
- To quantify the relationship between identified risk factors and cranial asymmetry.
Main Methods:
- A prospective cohort study involving 434 infants with DP.
- Data collection included parental questionnaires on risk factors and clinical assessments of transcranial difference (TCD), head tilt, and rotational asymmetry.
- Statistical analyses employed Pearson correlation, ANOVA, and t-tests.
Main Results:
- DP was more severe in male infants, those from multiple births, with a preferred head position, pre-existing torticollis, or head tilt.
- Lower gestational age and greater head rotational asymmetry correlated with increased DP severity.
- Cervical imbalance, including head tilt and torticollis, showed a strong correlation with deformational cranial asymmetry.
Conclusions:
- The severity of DP can be quantified in relation to specific risk factors.
- Cervical imbalance is a significant predictor of deformational cranial asymmetry severity in infants.
More Related Videos
Related Concept Videos
01:19Plastic Deformations
Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their original...
01:14Plastic Deformations
It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
01:20Plastic Deformation in Circular Shafts
When materials are subjected to forces that surpass their yield strength, they undergo a process known as plastic deformation. This results in a permanent alteration or strain in their structure. This concept can be specifically applied to circular shafts, where the deformation leads to a change in its shape. The precise evaluation of this plastic deformation requires understanding the stress distribution within the circular shaft, which is achieved by calculating the maximum shearing stress in...