Management of traumatic auricular avulsion injury - partial and complete

Auricular avulsion injuries present complex reconstructive challenges due to the intricate three-dimensional (3D) structure and vascular supply of the ear. This review examines traditional and emerging techniques in auricular trauma repair, including microsurgical advancements, digital planning, tissue engineering, and 3D bioprinting, highlighting their impact on reconstructive outcomes.

Traditional techniques, such as multilayer closure and microsurgical reattachment, remain foundational in auricular reconstruction. However, recent studies suggest that subtotal amputations with small vascular pedicles may survive without microvascular anastomosis. Microsurgical refinements, including digital planning and customized surgical guides, enhance precision in reconstruction. Tissue engineering innovations, such as 3D bioprinting with biomimetic scaffolds and magnetoresponsive hydrogels, show promise for auricular cartilage regeneration. Additionally, postoperative adjuncts like antipressure alarm systems and bioactive hydrogels seeded with stem cells improve healing and long-term outcomes.

Auricular trauma repair is evolving through a combination of established and innovative techniques. Digital planning, microsurgical advancements, and tissue engineering are shaping a new era of patient-specific reconstruction. Future research should focus on refining these technologies, evaluating long-term efficacy, and addressing economic feasibility to optimize patient outcomes.