The implant has an implant part (1) comprising a central axial recess (3) on which an internal thread (4) for a fastening screw (5) is provided. A tubular anti-twist plate region (6) is provided with radial projections and/or recesses over axial length with a constant cross-section. A body part (2) comprises another tubular anti-twist plate region (7) to be provided with radial projections (8) and/or recesses (9) in a cross-section of the former plate region. The projections and/or recesses of the latter plate region are provided with twist over a part of axial length.
