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Ye's Swing Technique for Small-incision Lenticule Extraction Surgery
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Trigonocephaly: Lille's surgical technique.

Philippe Pellerin1, Matthieu Vinchon, Patrick Dhellemmes

  • 1French National Center for Rare Craniomaxillofacial Malformations, Lille University Hospital, Lille, France, philippepellerin@me.com.

Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery
|August 1, 2013
PubMed
Summary

Trigonocephaly, a condition present since 1977, is linked to the skull base. Surgical correction involves frontal reshaping and orbital rim rotation, a technique termed "valgisation."

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Area of Science:

  • Neurosurgery
  • Craniofacial Surgery
  • Pediatric Neurosurgery

Background:

  • Trigonocephaly has been treated since 1977, with extensive clinical experience.
  • A cohort of 263 patients with trigonocephaly has been followed.
  • Clinical observations suggested a strong association between trigonocephaly and skull base abnormalities.

Purpose of the Study:

  • To investigate the relationship between trigonocephaly and the skull base.
  • To provide evidence supporting the skull base theory of trigonocephaly.
  • To describe a surgical technique for correcting trigonocephaly.

Main Methods:

  • Comparison of patient CT scans with age-matched normal skull templates.
  • Analysis of CT scans in vestibular orientation.

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  • Surgical correction involving frontal reshaping and orbital rim rotation.

    • Main Results:

    • CT scan analysis confirmed the link between trigonocephaly and skull base morphology.
    • The surgical technique involves frontal reshaping and rotation of the superior and lateral orbital rim.
    • This specific rotational movement was termed 'valgisation.'

    Conclusions:

    • Trigonocephaly is definitively related to the skull base.
    • The described surgical approach, 'valgisation,' effectively addresses the condition.
    • Long-term follow-up of 263 patients supports the efficacy of this treatment.