In the present invention, stand-alone interbody spine implant for fusion of adjacent vertebrae is disclosed. In the preferred configuration, this implant includes one spacer which is placed between adjacent vertebrae and at least one pin/bar/fastener which attaches the spacer to the bones. The spacer includes channel(s) with various configurations which guide the pins/bars/fasteners through the spacer in order to penetrate into bone. The combination of pins/bars/fasteners and spacer together, provides fixation of the implant to bone and fuses the adjacent vertebrae.
