• Oh Young Joo, Tae Ho Kim, Young Seok Kim, Tai Suk Roh, Eun-Ju Lee, Jin-Hyung Shim, Hyun Woo Cho, and In Sik Yun.
• Department of Plastic & Reconstructive Surgery, Institute of Human Tissue Restoration, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
• Yonsei Med. J. 2023 Apr 1; 64 (4): 291296291-296.

PurposeEar reconstruction is one of the most difficult areas in the field of reconstructive surgery. Due to limitations of the current practice, a novel method of auricular reconstruction is needed. Major advancements in three-dimensional (3D) printing technique have rendered the process of ear reconstruction more favorable. Herein, we present our experience in designing and clinically using 3D implants in both 1st and 2nd stage ear reconstruction surgery.Materials And MethodsAfter obtaining 3D CT data from each patient, a 3D geometric ear model was created using mirroring and segmentation processes. The 3D-printed implant design resembles but does not exactly match the normal ear shape, and can be inserted in harmony with the currently used surgical technique. The 2nd stage implant was designed to minimize dead space and support the posterior ear helix. The 3D implants were finally fabricated with a 3D printing system and used in ear reconstruction surgery in our institute.ResultsThe 3D implants were manufactured for application to the currently used two-stage technique while maintaining the shape of the patient's normal ear. The implants were successfully used for ear reconstruction surgery in microtia patients. A few months later, the 2nd stage implant was used in the 2nd stage operation.ConclusionThe authors were able to design, fabricate, and apply patient-specific 3D-printed ear implants for 1st and 2nd stage ear reconstruction surgeries. This design, combined with 3D bioprinting technique, may be a future alternative for ear reconstruction.© Copyright: Yonsei University College of Medicine 2023.

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