The composition and behavior of capsules around smooth and textured breast implants in pigs.

Background: The surface of the implant is one of the many factors often associated with the occurrence of capsular contracture, the etiopathogeny of which remains unclear. The purpose of this study was to analyze the behavior of capsular contracture by means of applanation tonometry and histology using a midsized animal model.

Methods: Silicone breast implants were implanted into 33 pigs and observed at 30, 60, 180, and 270 postoperative days.