a spinal implant for rigid fixation of at least two vertebrae of a pine has at least one support member configured for attachment to the vertebrae and is comprised of a bio - compatible polymer composite . a plurality of fasteners attach the support members to the vertebrae . a predefined standard selection of such bio - compatible implant components ore provided so as to define support members which conform to the specific anatomical structure of the patient &# 39 ; s spine without being modified .