14. A spine implant comprising: an elongated member having a first end, a second end, and a platform located between the first end and the second end, said platform including a leaf spring which has a plurality of layers; a first bone anchor adapted to be connected to the first end of the elongated member and configured to engage a first pedicle of a first vertebra; a second bone anchor adapted to be connected to the second end of the elongated member and configured to engage a second pedicle of the first vertebra; and a vertical rod assembly having a first end connected to the platform, and a second end configured for attachment to a second vertebra; such that, when secured between the first vertebra and second vertebra, the vertical rod assembly transmits load from the second vertebra to the platform, the platform transmits said load to the first end and second end of the elongated member via the leaf spring, and the first end and second end of the elongated member transmit said load to the first pedicle and the second pedicle of the first vertebra via the first bone anchor and the second bone anchor.
14. A spine implant comprising: an elongated member having a first end, a second end, and a platform located between the first end and the second end, said platform including a leaf spring which has a plurality of layers; a first bone anchor adapted to be connected to the first end of the elongated member and configured to engage a first pedicle of a first vertebra; a second bone anchor adapted to be connected to the second end of the elongated member and configured to engage a second pedicle of the first vertebra; and a vertical rod assembly having a first end connected to the platform, and a second end configured for attachment to a second vertebra; such that, when secured between the first vertebra and second vertebra, the vertical rod assembly transmits load from the second vertebra to the platform, the platform transmits said load to the first end and second end of the elongated member via the leaf spring, and the first end and second end of the elongated member transmit said load to the first pedicle and the second pedicle of the first vertebra via the first bone anchor and the second bone anchor. 17. The spine implant of claim 14 wherein said first end is comprised of a plurality of layers and said second end is comprised of a plurality of layers.