The unique anatomical design and the perforated texture allow for best possible fusion of the cervical vertebra. The kidney shaped style of the implant provides individual fitting and a reduced sinkage into the endplates. A serrated center fin ensures ideal positioning previous to the final fusion. Big pouches and transverse holes accelerate the adhesion and, therefore, the natural healing process. Integrated tantalum markers support when positioning the cages, as well as during the post-operative follow-up.