Advancing Auricular Reconstruction: The Evolution and Outcomes of Auricular Reconstruction Using a Porous Polyethylene (PPE) Framework

Abstract

Background/Objectives Auricular reconstruction poses significant surgical challenges in congenital and post-traumatic cases. Porous polyethylene (PPE) implants have emerged as a biocompatible alternative to the traditional autologous rib cartilage frames, offering less morbidity and a potentially stable framework. Here, we summarize the current evidence of the use of PPE auricular implants. Methods: A literature search was performed in accordance with PRISMA guidelines across several databases. Studies reporting outcomes of PPE implants in auricular reconstruction were included. Data were extracted on patient characteristics, operative details, and complication rates, along with any required interventions to address complications. Complications were classified as minor or major based on their management strategy. Results: Of 544 screened studies, 14 studies representing 1036 patients were included. PPE implant use was generally linked with favorable esthetic outcomes and high patient satisfaction (80%). Study-to-study variation in complication rates was notable, with some complication rates as high as 44% in the early 1990s. By the early 2000s, advancements in surgical methods—particularly the use of temporoparietal fascia (TPF) flaps and other flaps for optimal soft tissue coverage—had markedly reduced complication rates, with recent studies reporting rates as low as 7%. Implant exposure (6.7%) and implant fractures (ranging from 1.6% to 3.2%) were the most frequently reported problems. Conclusions: PPE auricular implants, despite decades of availability, have faced limited global adoption due to concerns over complications and longevity. Advances in surgical techniques have significantly reduced complication rates (<7%), making PPE implants a viable early intervention with favorable esthetics and negligible donor-site morbidity.

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