bitemporal narrowing
Decreased width of the skull at the temporal regions, often seen in craniosynostosis.
Full Definition
Bitemporal narrowing refers to a reduction in the normal width of the skull at the temporal regions, creating a pinched or hourglass appearance of the head when viewed from above. This deformity is commonly associated with bicoronal craniosynostosis, where premature fusion of both coronal sutures restricts normal lateral growth of the anterior skull. The narrowing can be severe enough to cause functional problems including temporal muscle restriction and cosmetic concerns. Surgical correction typically involves fronto-orbital advancement with temporal expansion using bone grafts or distraction techniques. The condition may be isolated or occur as part of various craniofacial syndromes such as Saethre-Chotzen or Muenke syndrome.
Usage
Usage note: Typically assessed on axial CT or clinical examination from above the patient.
In Context
- "The CT scan revealed significant bitemporal narrowing consistent with bicoronal synostosis." — radiology report
- "Surgical planning focused on correcting the bitemporal narrowing while maintaining frontal projection." — preoperative planning note