46. A medical implant comprising: a) first and second bone anchors; b) a longitudinal connecting member having a first non-sliding anchor portion of a first width that passes through and is secured to the first bone anchor; c) the connecting member has a second integral extension portion that extends axially from the first anchor portion; the extension portion having a second width that is less than the first width, d) a sleeve slidably receiving the extension portion that is mounted in the second bone anchor such that the extension portion passes through and is slidably received in the second bone anchor; e) an end blocker secured to the connecting member; and f) a bumper located between the blocker and the second bone anchor; the sleeve and the bumper being pre-compressed.
46. A medical implant comprising: a) first and second bone anchors; b) a longitudinal connecting member having a first non-sliding anchor portion of a first width that passes through and is secured to the first bone anchor; c) the connecting member has a second integral extension portion that extends axially from the first anchor portion; the extension portion having a second width that is less than the first width, d) a sleeve slidably receiving the extension portion that is mounted in the second bone anchor such that the extension portion passes through and is slidably received in the second bone anchor; e) an end blocker secured to the connecting member; and f) a bumper located between the blocker and the second bone anchor; the sleeve and the bumper being pre-compressed. 47. The connecting member according to claim 46 , wherein the sleeve includes a cup shaped end surface.