COLONIAL® COLONIAL® is a cervical interbody fusion device made from PEEK radiolucent polymer. The COLONIAL® spacer is available in numerous footprints, heights and sagittal profiles to accommodate various patient anatomies. Included in the COLONIAL® system are innovative instruments designed to streamline the anterior cervical fusion procedure. Sized for the cervical spine: Compatible with a Minimally Invasive Surgical (MIS) technique Large axial hole: Provides area for graft packing Self-distracting leading edge: Aids in easy implant insertion