Novel 3D-printed aids for total ear reconstruction.

Area of Science:

• Plastic Surgery
• Biomedical Engineering
• Medical Imaging

Background:

• Total ear reconstruction for microtia presents significant aesthetic and technical challenges.
• Current methods for porous polyethylene implant placement often involve manual planning and intraoperative modifications.
• Precise implant positioning and customization are crucial for successful microtia repair.

Purpose of the Study:

• To present a novel 3D-guided technique for patient-specific ear reconstruction in microtia.
• To improve the accuracy and efficiency of porous polyethylene implant placement.
• To enhance aesthetic predictability and reduce operative time in microtia surgery.

Main Methods:

• Utilized high-resolution 3D facial scans or CT data for patient-specific jig and implant design.
• Employed preoperative jigs with facial landmarks for precise ear positioning.
• Integrated vascular mapping (CTA) into jigs for superficial temporal artery identification and flap design.
• Printed jigs using BioMed Elastic 50A Resin, tailoring implants to patient age and growth.

Main Results:

• Achieved accurate ear alignment with the contralateral ear, minimizing intraoperative adjustments.
• Eliminated the need for implant assembly and reduced operative time.
• Demonstrated improved positioning accuracy, enhanced aesthetic predictability, and potential complication reduction via vascular mapping integration.

Conclusions:

• The 3D-guided technique offers a streamlined, efficient, and reproducible approach to microtia ear reconstruction.
• This method significantly improves surgical planning and patient outcomes.
• The technique represents an advancement in addressing the complexities of total ear reconstruction.