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Area of Science:

  • Cranial morphology and development
  • Pediatric neurosurgery
  • Craniosynostosis research

Background:

  • Sagittal synostosis can cause scaphocephaly, a skull deformity.
  • Understanding presurgical cranial changes is crucial for surgical decision-making.
  • This study investigates if scaphocephaly morphology changes with age before surgery.

Purpose of the Study:

  • To analyze cranial morphology in infants with sagittal synostosis before surgical intervention.
  • To compare the cranial shape of affected infants to age-matched controls.
  • To identify age-related morphologic differences in untreated sagittal synostosis.

Main Methods:

  • Cross-sectional analysis of CT scans from 111 untreated sagittal synostosis patients (<9 months) and 37 controls.
  • Morphometric analysis was performed on all subjects.
  • Patients were divided into three age groups for statistical comparison.

Main Results:

  • Sagittal synostosis patients exhibited stable, lower cephalic indices compared to controls.
  • Total cranial volume was similar, but posterior volume was greater in patients.
  • Older patients showed more parietal narrowing; frontal bossing was more severe in younger patients.

Conclusions:

  • Upper parietal narrowing and occipital protuberance are consistent deformities in sagittal synostosis.
  • Frontal bossing severity varies with age, being more pronounced in younger infants.
  • Pterional constriction is relative, not absolute, and influenced by adjacent morphology.