In the field of prosthesis repair and orthopedic technology, a pure titanium external hanging bone integrated prosthetic implant is disclosed, including: fixed cap, threaded structure; The fixed cap has a threaded structure inside. The externally mounted bone integration prosthetic limb of the invention can also achieve successful bone connection between titanium and bone cortex to provide retention without damaging the tissues in the bone marrow cavity, and reduce the irreversible bone absorption caused by the stress shielding of the bone cortex in the traditional prosthetic limb. Besides, the external side of the titanium prosthetic limb can achieve good soft tissue integration with the skin and soft tissue. On the other hand, there is a large space for the appearance of this externally mounted implant. The porous titanium cap prosthetic implant can be customized by using CT scanning combined with 3D printing technology of selective laser melting (SLM), so that the internal surface of the externally mounted prosthetic is more matching with the shape of the stump bone and the internal tissue of the implant can grow. On the outside, the more natural biological shape and mechanical requirements are met.
The new externally mounted osteointegration prosthesis can also successfully achieve the bony connection between titanium and bone cortex to provide retention, without damaging the tissues in the bone marrow cavity, and reduce the irreversible bone absorption caused by the stress shielding of the bone cortex in the traditional prosthesis. Besides, the external surface of the titanium prosthesis can achieve good soft tissue integration with the skin and soft tissue, and the tightly combined soft tissue edge can reduce the surrounding inflammatory reaction In order to minimize bone resorption around the implant due to soft tissue margin inflammation. On the other hand, this kind of external hanging implant has a large space to play the shape. 3D printing technology can be used to customize the personalized prosthetic implant, so that the inside of the external hanging prosthetic is more matched with the bone stump, while the outside can better meet the more natural biological shape and mechanical requirements. In addition to the biocompatible biomechanical properties of pure titanium, high stiffness, strength and chemical properties, porous titanium also has the characteristics of ultra-low density and large specific surface area. The structure and elastic modulus of porous titanium are closer to the natural bone spongy, creating conditions for the inward growth of cells and the flow of body fluids. As a kind of prosthesis, the design of porous titanium is better than the traditional bone integrated prosthesis. And he needs to have design parameters that are close to the mechanical properties of human bone as needed.
In addition to the biocompatible biomechanical properties of pure titanium, high stiffness, strength and chemical properties, porous titanium also has the characteristics of ultra-low density and large specific surface area. The structure and elastic modulus of porous titanium are closer to the natural bone spongy, creating conditions for the inward growth of cells and the flow of body fluids. As a kind of prosthesis, the design of porous titanium is better than the traditional bone integrated prosthesis.
