A method of grafting a bioactive polymer on implants, the method comprising the following steps:a) mounting implants on a support structure;b) dipping the implants in a bath of acid;c) rinsing the implants;b) dipping the implants in an anodizing bath so as to anodize them;e) rinsing the implants;f) putting the implants into a polymerization chamber;g) mounting the implants on an elevator present in the chamber;h) actuating the elevator so as to dip the implants into a polymerization bath;i) subjecting the polymerization bath to a polymerization catalyst;j) raising the elevator from the polymerization bath;k) removing the implants from the elevator;l) extracting the implants from the chamber;m) washing the implants so as to remove any excess non-grafted bioactive polymer therefrom; andn) drying the grafted implants.