The present disclosure provides an implantable fastening device for securing a graft to at least one bone of a joint, comprising a hollow tubular elongate textile element defining an inside volume and including a first free end and a second free end; and a bearing element having at least two through openings. Said elongate element has an initial outside diameter d0 (mm) and includes an admission orifice leading into its inside volume and an exit orifice going from its inside volume that are spaced apart by an initial distance m0 (mm) defining a sleeve, the first end of said elongate element being passed into the sleeve so as to form a first loop with at least a portion thereof being passed through at least two through openings of said bearing element. The second free end of said elongate element forms a second loop passing through a through opening of said bearing element. The sleeve receiving a portion of elongate element has an outside diameter at rest n0, and the distance m0 and the outside diameter d0 of said elongate element are determined in such a manner that in operation, traction exerted on the first free end causes the admission and exit orifices to move towards each other and correspondingly causes the sleeve to expand radially.