1. A longitudinal connecting member assembly having first and second bone anchors, the assembly comprising: a) a soft portion having a cord elongated to a length by tensioning and held in continuous tension, the cord being in slideable relation with the first bone anchor; b) a rigid portion being in fixed relation with the second bone anchor; c) a separate connecting structure in fixed relation with the rigid portion and the cord; d) a rigid end blocker fixed to the cord by a releasable set screw, the rigid end blocker having opposed outer surfaces for tool engagement and being sized, shaped, and positioned so as to be able to re-tension the assembly; and e) an elastic bumper and a spacer both being in slidable relation with the cord, the elastic bumper positioned between the rigid end blocker and the first bone anchor, the first bone anchor being positioned between the elastic bumper and the spacer.
1. A longitudinal connecting member assembly having first and second bone anchors, the assembly comprising: a) a soft portion having a cord elongated to a length by tensioning and held in continuous tension, the cord being in slideable relation with the first bone anchor; b) a rigid portion being in fixed relation with the second bone anchor; c) a separate connecting structure in fixed relation with the rigid portion and the cord; d) a rigid end blocker fixed to the cord by a releasable set screw, the rigid end blocker having opposed outer surfaces for tool engagement and being sized, shaped, and positioned so as to be able to re-tension the assembly; and e) an elastic bumper and a spacer both being in slidable relation with the cord, the elastic bumper positioned between the rigid end blocker and the first bone anchor, the first bone anchor being positioned between the elastic bumper and the spacer. 2. The assembly of claim 1 further comprising a third bone anchor fixed to the rigid portion.