Methods and apparatuses for restoration of human or animal bone anatomy, whichmay include introduction, into a bone of an expansible implant (1) capable ofexpansion in a single determined plane (2), positioning the expansible implantin the bone in order to correspond the single determined plane with a bonerestoration plane and opening out the expansible implant in the bonerestoration plane. A first support surface (8) and a second support surface(9) spread tissues within bone. The embodiments of the invention may alsoinclude injecting a filling material around the implant.
