Contracture status and the surface roughness (Ra) of polyurethane foam–coated implants (Silimed). Surface roughness refers to the measurement of microirregularities found on the implant surface, as observed under scanning electron microscopy. (A) The roughness of the implant surface is significantly higher in contracted capsules (P = .033). (B) Detailed views of the surface characteristics of contracted capsules and (C) uncontracted capsules.