Bone allografts remain irreplaceable whether it be a question of offsetting high bone decay or oncologic surgery that could not be filled by an autograft. To meet the needs of patients, a network has been organized. It includes hospital coordina- tors, the Biomedicine Agency, surgical teams, healthcare establishments, and tissue banks. Its mission is to provide surgeons with a stock of validated grafts. The importance of this stock, however, must not be underestimated because it is of human origin. For this reason, the retrieval, conservation and distribution of these grafts must comply with ethical rules and health safety standards. The laws of bioethics and good practices for retrieval and preparation aim to make these demands met.