A New Three-Dimensional Template for the Fabrication and Localization of an Autogenous Cartilage Framework during Microtia Reconstruction

Abstract

Aims: To assist with the accurate fabrication and localization of a costal cartilage framework for auricular reconstruction, three-dimensional (3D) digital and solid templates including the auricle and guide plate were made for microtia patients. Methods: The computed tomography data of 60 patients with microtia were included. The 3D digital template of the auricle and guide plate on the healthy side was shaped using MIMICS software with graphic image processing and 3D reconstruction technology. The 3D digital template on the affected side was produced by mirror technique and made into a solid template for clinical application. Results: All 60 patients had a good result of the location and the appearance of the constructed auricle. The time of operation was decreased by an average of half an hour. An individualized 3D solid model of the reconstructed auricular template on the affected side was successfully produced and used in auricular reconstruction. Conclusions: The new 3D template of the auricle and guide plate may be a major contribution to the engraving, assembling and localization of the microtia auricle in auricular reconstruction.

Clinical applications of three‐dimensional printing in otolaryngology–head and neck surgery: A systematic review

“…A female patient with grade 4 microtia and a male patient who underwent surgical resection for basal cell carcinoma, respectively, had auricular prostheses 3D printed and permanently placed . The use of 3D‐printed ear models as templates for auricular reconstruction in patients with microtia has been extensively documented in the literature . In addition, 3D‐printed models are routinely used to prebend titanium mesh for orbital reconstruction following orbital wall/floor trauma …”

“…32,33 The use of 3D-printed ear models as templates for auricular reconstruction in patients with microtia has been extensively documented in the literature. [34][35][36][37] In addition, 3D-printed models are routinely used to prebend titanium mesh for orbital reconstruction following orbital wall/floor trauma. [38][39][40] Medical Education, Surgical Training, and Informed Consent 3D-printed models have emerged as important teaching aids in all levels of medical and residency training, and are likely to have further potential applications and benefits in the future.…”

Utility of a Ruler for Reconstructed Auricle Positioning

“…3D printers, CT equipment, and computer-assisted positioning method are complex and expensive, limiting their use in clinical practice. [7][8][9] The ruler developed by our surgical team is simple, easy to use, accurate, and non-invasive and thus more applicable in plastic surgery.…”

“…Chen et al 7 used multi-slice spiral computed tomography (CT) to collect patients’ skull data and used a 3D printer to make a 3D template for positioning the reconstructed auricle. Kohei Umekawa 8 used 3D CT to determine the best site for auricular reconstruction.…”

Morphological Variation of Subarcuate Artery and Canal in Atresia

“…The incidence of congenital malformation of external and middle ear ranges from 1 in 10,000 to 1 in 20,000 [6,7]. Typical presentations include microtia, varying degrees of malformation of the external auditory canal ranging from complete absence to mild stenosis and malformation of the middle ear.…”