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Statistical shape analyses of trigonocephaly patients

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Abstract

Purpose

Surgery is the first treatment option for patients with metopic craniosynostosis. Fronto-orbital advancement is the preferred method for correction of isolated trigonocephaly, but it is hard to understand whether surgery has been successful mainly in an early period. We aim to investigate the shape differences in the head shapes of trigonocephaly patients compared between preoperative and postoperative term.

Methods

Cranial shape data were collected from the two-dimensional digital images. The Generalized Procrustes analysis was used to obtain mean shapes of the preoperative and postoperative term. The shape deformation of the frontal calvarium from preoperative to the postoperative term was evaluated using the thin-plate spline (TPS) method.

Results

There was significant cranial shape difference between preoperative and postoperative term. The high-level deformations for preoperative to postoperative term determined seen in TPS graphic. Highest deformation was observed at the bifrontal dimension especially at nasion and posterior edge of the forehead.

Conclusions

In this study, we showed that the shape difference and structural deformation of the calvarium were correlated with the metopic craniosynostosis. The present study also shows that preoperative and postoperative head shapes of patients with trigonocephaly can be compared using the landmark-based geometrical morphometric method by taking into consideration the topographic distribution.

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Authors and Affiliations

  1. Faculty of Medicine, Department of Neurosurgery, Uludag University Medical School, Bursa, Turkey

    M. Özgür Taşkapılıoğlu, Seçkin Kaya & Duygu Baykal

  2. Faculty of Medicine, Department of Biostatistics, Uludag University, Bursa, Turkey

    Gökhan Ocakoğlu

  3. Faculty of Medicine, Department of Radiology, Uludag University, Bursa, Turkey

    Zeynep Yazıcı

Authors
  1. M. Özgür Taşkapılıoğlu
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  2. Gökhan Ocakoğlu
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  3. Seçkin Kaya
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Correspondence to M. Özgür Taşkapılıoğlu.

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All wardens of participants signed the informed consent, and the ethics committee of the university approved this retrospective study and the study protocol.

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On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Taşkapılıoğlu, M.Ö., Ocakoğlu, G., Kaya, S. et al. Statistical shape analyses of trigonocephaly patients. Childs Nerv Syst 36, 379–384 (2020). https://doi.org/10.1007/s00381-019-04269-y

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  • DOI: https://doi.org/10.1007/s00381-019-04269-y

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