Novel theory for surgical reconstruction of segmental mandibular defect: CAT concept

Kazunobu Hashikawa, Daisuke Sugiyama, Satoshi Yokoo, Shinya Tahara

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We propose the "CAT concept", a new theory for surgical reconstruction after oncological segmental mandibulectomy. The essence of the theory is to reconstruct three reference points on the mandible - "C" (condylar head) "A" (mandibular angle) and "T" - necessary and sufficient for its surgical reconstruction. An anthropometric analysis of the mandible of ten preserved human cadavers showed that the mandibular contour can be made merely 3 to 7 mm smaller than the original when the CAT concept is adopted, suggesting that the concept sufficiently satisfies the condition for surgical reconstruction of the mandible. A review of our 45 clinical cases of mandibular reconstruction after oncological ablation demonstrated a positive trend between the number of reconstructed or non-resected reference points of the CAT concept and the esthetic outcome of each patient (Fisher's exact test, p<0.01), suggesting that the concept satisfies the necessary condition. Given these results, we concluded that the CAT concept is a highly practical theory for the surgical reconstruction of segmental mandibular defects.

Original languageEnglish
Pages (from-to)84-89
Number of pages6
JournalJapanese Journal of Head and Neck Cancer
Volume38
Issue number1
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint

Mandibular Reconstruction
Mandible
Mandibular Osteotomy
Esthetics
Cadaver

Keywords

  • CAT classification
  • CAT concept
  • Head and neck cancer
  • Head and neck reconstruction
  • Mandibular defect
  • Mandibular reconstruction

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Oncology

Cite this

Novel theory for surgical reconstruction of segmental mandibular defect : CAT concept. / Hashikawa, Kazunobu; Sugiyama, Daisuke; Yokoo, Satoshi; Tahara, Shinya.

In: Japanese Journal of Head and Neck Cancer, Vol. 38, No. 1, 2012, p. 84-89.

Research output: Contribution to journalArticle

Hashikawa, Kazunobu ; Sugiyama, Daisuke ; Yokoo, Satoshi ; Tahara, Shinya. / Novel theory for surgical reconstruction of segmental mandibular defect : CAT concept. In: Japanese Journal of Head and Neck Cancer. 2012 ; Vol. 38, No. 1. pp. 84-89.
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