title: Mandible reconstruction assisted by preoperative simulation and transferring templates: cadaveric study of accuracy.
abstract: OBJECTIVE
  In this study we tried to define tumor resection, fibula cutting, and positioning by surgical templates to perform the mandible reconstruction surgery according to the preoperative simulation. The accuracy was evaluated through cadaveric surgery.
  
  
  METHODS
  Five cadaveric mandibles and fibulas were obtained. Preoperative surgical simulation was performed. Surgical templates that defined tumor resection, fibula cutting, and positioning were designed and fabricated. Translation, angular deviation, and rotation of bone grafts, as well as translation of condyles, were measured.
  
  
  RESULTS
  The reconstructed mandibles showed high similarity to the surgical planning. The mean translation, angular deviation, and rotation of fibula segments of the reconstructed mandibles were 1.35 ± 0.86 mm, 3.36° ± 1.86°, and 8.13° ± 5.35°, respectively. In the mandible remnants, the translation of condyles was measured, with a mean of 1.39 ± 0.66 mm.
  
  
  CONCLUSIONS
  Our method of defining the tumor resection, fibula cutting, and positioning by surgical templates was accurate enough for mandible reconstruction surgery.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.
authors.forename: Guang-sen
authors.initials: GS
authors.lastname: Zheng
authors.forename: Yu-xiong
authors.initials: YX
authors.lastname: Su
authors.forename: Gui-qing
authors.initials: GQ
authors.lastname: Liao
authors.forename: Pei-feng
authors.initials: PF
authors.lastname: Jiao
authors.forename: Li-zhong
authors.initials: LZ
authors.lastname: Liang
authors.forename: Si-en
authors.initials: SE
authors.lastname: Zhang
authors.forename: Hai-chao
authors.initials: HC
authors.lastname: Liu
mesh_terms: D016025:Bone Transplantation; D002102:Cadaver; D003198:Computer Simulation; D005360:Fibula / Q000601:surgery; D058752:Free Tissue Flaps; D006801:Humans; D021621:Imaging, Three-Dimensional; D008334:Mandible / Q000000981:diagnostic imaging / Q000601:surgery*; D008335:Mandibular Condyle / Q000601:surgery; D008339:Mandibular Neoplasms / Q000601:surgery*; D008953:Models, Anatomic; D010347:Patient Care Planning; D057234:Preoperative Period; D019651:Plastic Surgery Procedures; D025321:Surgery, Computer-Assisted / Q000379:methods*; D036542:Tomography, Spiral Computed