Study of 1,400 Patients Shows Polyurethane-Coated Implants Significantly Cut Scarring Risks After Post-Mastectomy Radiotherapy

New research from EBCC15 shows polyurethane-coated implants cut the risk of painful scar tissue and corrective surgery for women receiving radiotherapy.

By: AXL Media

Published: Mar 25, 2026, 6:33 AM EDT

Source: Information for this report was sourced from European Organisation for Research and Treatment of Cancer

Addressing the Challenges of Post-Radiotherapy Reconstruction

For many women diagnosed with high-risk breast cancer, the road to recovery involves both a mastectomy and subsequent radiotherapy to eliminate any remaining malignant cells. While reconstructive surgery using implants is a common choice for restoring breast shape, the introduction of radiation significantly increases the risk of local complications. The primary concern in these cases is capsular contracture, a condition where the body’s natural immune response creates a thick, hard layer of scar tissue around the synthetic implant. This often leads to a breast that is painful, uncomfortable, and visibly distorted, necessitating further medical intervention.

The Structural Advantage of Polyurethane Coating

Traditional breast implants are typically made of silicone with a smooth or textured surface. In contrast, the implants highlighted in the new research feature a specialized, spongy outer layer made of polyurethane. This coating is designed to integrate more effectively with the surrounding human tissue, potentially disrupting the uniform formation of the collagen fibers that lead to hardening. Dr. Kerstin Wimmer, a surgeon at the Medical University of Vienna, noted that while these devices have been available for several years, there has been a lack of large-scale, real-world evidence regarding their specific efficacy in patients who must also undergo radiation treatment.

A Multi-Country Analysis of Surgical Outcomes

The research team conducted a retrospective analysis of 1,455 women treated for breast cancer between 2016 and 2024. The study spanned 26 sites across 15 different countries, providing a diverse data set of patients with an average age of 47. Of the participants, 475 received the polyurethane-coated models, while 980 were fitted with standard non-coated implants. By tracking the health of these women for up to three years following their radiotherapy, the researchers were able to quantify the long-term physical impact of the implant type on the recovery process.