sounds like the material is HA
The difference between CT-bone and HA is that it has degradability. A patients body can break this stuff down and remould it. Which means that it can be fully integrated into the body and become a part of the living skeleton.
HA cannot be broken down. The sintering process, required to increase its mechanical strength, creates a crystalline molecular structure. Adding HA to bones is a bit like slapping some glass on them. Bloods vessels and bone cells cannot grow into it, it's an inert material, it will never become a part of the patients biology. Surgeons only use it because it has the ability to bind to bone, that doesn't mean it will ever become bone. HA behaves like any other artificial material when applied, in that it never becomes a part of the body's biology. It is synthetic. Bones might look like they are 'fixed' by it, but in fact that is an illusion.
Bones 'fixed' by HA can never heal, they lose that potential because of the lack of degradability. That is why HA is bad.
CT-bone implants are not like other implants, in that they become a part of the patients biology. Once inside the body they transform into natural bone. The implants are colonised by a patients own cells. It's like having a bone graft, only better because the implants are created by a 3D printer.