Medical implants replace dysfunctional or missing body parts to maintain physiological functions. The associated market is growing by 4%/year. However, the key factor restraining the market is high implant costs. In this view, PEEK and CRF-PEEK due to biocompatibility, mechanical properties similar to that of bone and radiolucency, are increasingly used instead of metals. But, these biomaterials are bionert inducing a very limited osseointegration, which is THE expectation for bone implants.