An apparatus for anchoring a graft segment to a fixed structure in-vivo includes a sleeve member having one or more suture channels extending axially therethrough and an axial opening extending adjacent to the one or more suture channels from a first end of the sleeve member. The apparatus further includes a plug member that is configured for mating engagement within the axial opening of the sleeve member, with such engagement compressing the one or more suture channels to frictionally secure a respective graft suture therein.