Comparisons of Therapeutic and Aesthetic Effects of One-Stage Implant-Based Breast Reconstruction with and without Biological Matrix.

Background: Biological matrix can provide coverage of compromised muscle and augment the subpectoral pocket in the one-stage reconstruction. However, few studies compared one stage implant-based breast reconstruction with and without biological matrix. The primary endpoint of our study was to assess the patient-reported outcomes (PROs) based on BREAST-Q version 2.0 and analyze complications between SIS matrix-assisted implant-based breast reconstruction (IBBR) and no-matrix-assisted IBBR.

Methods: This retrospective single-center study was conducted from May 2015 to April 2019, and we analyzed 155 patients who underwent one-stage IBBR with at least 1 year of follow-up. Seventy-nine patients underwent one-stage IBBR with SIS matrix group and 76 patients underwent one-stage IBBR without SIS matrix group were evaluated of PROs with BREAST-Q version 2.0 (from 3 different domains) and compared with complications. Complications occurred in patients were divided into major complications and minor complications.

Results: In the satisfaction domain, the mean score for satisfaction with breasts was 60.27 (17.71) in the SIS matrix group and 54.49 (14.76) in the no-matrix group, p=0.045. The multivariate logistic regression for postoperative complications in the whole series pointed out a statistical significance for age>40 years old (odds ratio 3.314, 95% CI 1.012-10.854, p=0.048) and patients with endocrine therapy (odds ratio 0.260, 95% CI 0.092-0.736, p=0.011).

Conclusion: Patients who underwent SIS matrix-assisted one-stage IBBR yield better results in PROs of satisfaction with breasts. Other domains and complications between the two groups had no significant difference.