A Comparison of Capsular Contracture Rates after Immediate Implant-based Breast Reconstruction Using Biologic versus Synthetic Mesh.

[BACKGROUND] Capsular contracture is one of the most common reasons for reoperation after implant-based breast reconstruction. Prior investigations have suggested that biologic mesh may mitigate capsular contracture development. This study sought to compare capsular contracture rates between patients undergoing immediate implant-based breast reconstruction with biologic versus synthetic mesh.

[METHODS] A retrospective review was conducted of the senior author's primary implant-based breast reconstructions between 2008 and 2023. Demographics and the incidence of clinically significant Baker grade III or IV capsular contractures were compared between biologic and synthetic mesh cohorts. Univariate and multivariate logistic regressions were then performed to assess potential risk factors for the development of capsular contracture.

[RESULTS] A total of 772 breasts underwent immediate reconstruction, of which 689 (89.2%) used biologic and 83 (10.8%) used synthetic mesh. Capsular contracture occurred in 15 (2.2%) biologic mesh breasts and three (3.6%) synthetic mesh breasts with no significant difference between the two groups ( = 0.430). Logistic regression showed that radiation was a borderline significant risk factor for developing capsular contracture, but the use of either biologic or synthetic mesh was not significant ( = 0.351).

[CONCLUSIONS] Biologic and synthetic meshes function as effective tools in prosthetic breast reconstruction. Our long-term data suggest that the risk of capsular contracture with these devices is low, and there does not seem to be a difference between the two materials. However, there does need to be a shift in how capsular contracture is assessed and discussed in the reconstruction population.