Development of a novel anatomical thin titanium mesh plate with reduction guidance and fixation function for Asian zygomatic-orbitomaxillary complex fracture

Yu Tzu Wang, Chih Hao Chen, Po Fang Wang, Chun Li Lin*

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

9 Scopus citations

Abstract

For this study we developed an anatomical thin titanium mesh (ATTM) plate for Asian zygomaticomaxillary complex (ZMC) fracture repair with reduction guidance and fixation function. The ATTM plate profile was designed as an L-shape to fix at the anterior maxilla and lateral buttress of the ZMC. Computer-aided stamping analysis was performed on four screw-hole patterns in the ATTM plate — a control without screw-holes, square screw-holes, double screw-holes, and large-diameter, double screw-holes — using upper/lower dies of averaged ZMC reconstruction models. A regular ATTM plate of 0.6 mm thickness was manufactured and pre-bent using a patient-matched stamping process to verify its feasibility on three ZMC fracture models with one, two, and three fracture segments. The stamping analysis found that the double screw-holes design resulted in the most favorable performance among all the designs because of maximum von Mises stress (408 MPa) under the ultimate tensile strength. Positioning practice showed that the stamped, pre-bent ATTM plate can be used as a reduction guide to provide precise ZMC segment fixation in a completely passive fashion while limiting redundant rotation/micromovement between the separate bones in all directions. This study concluded that the ATTM plate with double screw-hole pattern design, using a patient-matched, pre-bent technique, can fit the ATTM plate/ZMC interface well, decrease mobility of unstable fracture segments, and provide good original facial contour recovery, while improving reduction efficiency.

Original languageEnglish
Pages (from-to)547-557
Number of pages11
JournalJournal of Cranio-Maxillofacial Surgery
Volume46
Issue number4
DOIs
StatePublished - 04 2018

Bibliographical note

Publisher Copyright:
© 2017 European Association for Cranio-Maxillo-Facial Surgery

Keywords

  • Fracture
  • Patient-matched
  • Reduction
  • Stamping analysis
  • Zygomaticomaxillary complex

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