The subject of the present invention is an implantable fixation device (1) for securing a graft to at least one bone of a joint, comprising a hollow tubular elongate textile element (2) delimiting an interior volume (3) and comprising a first free end (4) and a second free end (3), and a support element (6) comprising at least two through openings (7,8). Said elongate member (2) has an initial external diameter d0 (mm) and comprises an inlet port (15) in its interior volume and an outlet port (16) of its interior volume (3) spaced an initial distance apart m0 (mm) delimiting a sleeve (17), the first end (4) of said elongate member (2) being passed into the sleeve (17), so as to form a first loop (20) of which at least a portion (20a) has passed through at least two through openings (7,8) of said support member (6). The second free end (5) of said elongate member (2) forms a second loop (22) passing through a through opening (7) of said support member (6). The sleeve (17), receiving a portion (2a) of elongate element (2), has an external diameter at rest n0 and the distance m0 and the outer diameter d0 of said elongate element (2) are determined so that in operation , a traction exerted on the first free end (4) causes the approximation of the inlet (15) and outlet (16) ports and correlatively the radial expansion of the sleeve (17).La présente invention a pour objet un dispositif de fixation implantable (1) pour la solidarisation d'un greffon à au moins un os d'une articulation, comprenant un élément textile longiligne tubulaire creux (2) délimitant un volume intérieur (3) et comprenant une première extrémité libre (4) et une seconde extrémité libre (3), et un élément d'appui (6) comprenant au moins deux ouvertures traversantes (7,8). Ledit élément longiligne (2) a un diamètre externe initial d0 (mm) et comprend un orifice d'admission (15) dans son volume intérieur et un orifice de sortie (16) de son volume intérieur (3) distants d'une distance initial m0 (mm) délim
