26. A spinal implant that is adapted to be mounted to a spine comprising: a deflection rod system having a first section and a second section; a horizontal rod adapted to be secured at each end by a bone anchor to a vertebra; a first mount connected to the first section and adapted to secure the first section of the deflection rod system to a vertical rod which supports a load from an adjacent vertebra; a second mount connected to the second section which secures the second section of the deflection rod system to the horizontal rod; and wherein the deflection rod system is adapted, by bending of the deflection rod system, to permit resilient deflection of the first mount relative to the horizontal rod and thereby support the load from the adjacent vertebra while accommodating relative movement between the vertebra and the adjacent vertebra.
27. The spinal implant of claim 26 , wherein said deflection rod system further comprises a third section and wherein the second section is located between the first section and the third section; and wherein the implant includes a third mount connected to the third section and adapted to secure the third section to another vertical rod which supports a load from the adjacent vertebra; and wherein the deflection rod system is adapted, by bending of the deflection rod system, to permit resilient deflection of the first mount and the third mount relative to the horizontal rod and thereby support the load from the adjacent vertebra while accommodating relative movement between the vertebra and the adjacent vertebra.