An implant is provided for use in stabilizing vertebral bodies or bones, comprisinga first end (2) anda second end (3, 3),a tubular section (4) between the first end (2) and the second end (3) having a longitudinal axis (L),the tubular section (4) being flexible in such a way that it is expandable in a radial direction when a force (F, F) acts in an axial direction which reduces the distance between the first end (2) and the second end (3).