12. The spine implant of claim 11 wherein said first leaf spring and said second leaf spring have approximately flat sides.
11. A spine implant comprising: an elongated member including a first end, a second end, and a platform located between the first end and the second end, the elongated member including a first leaf spring which includes a plurality of layers located between the first end and the platform, and a second leaf spring including a plurality of layers located between the second end and the platform; 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 first leaf spring and second 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.