Femoral head articular surface collapse or femoral head necrosis is a common clinical disease. At present, drilling decompression is often used for treatment. During the operation, the dead bone needs to be removed and then the implant supporting the collapsed or necrotic femoral head is filled.
Porous medical metal implant materials have important and special uses in the treatment of bone tissue trauma and femoral tissue necrosis, and now common such materials include porous metal stainless steel, porous metal titanium, etc. Used as bone tissue trauma and tissue necrosis femoral treatment of porous implant materials, should be up to 30 ~ 85%, the porosity and pore best all connected with uniform distribution, or pore part connected with uniform distribution according to need, make it is consistent with the body's bone growth, and reduce the weight of the material itself, the implants used to fit the human body.
Due to its excellent biocompatibility and mechanical properties, the porous tantalum metal is expected to replace the above-mentioned traditional medical metal biomaterials and become a biological material mainly used for the treatment of bone tissue necrosis. As tantalum is harmless, non-toxic and has no side effects on human body, and with the rapid development of medicine at home and abroad, tantalum is further recognized as a human body implant material, people's demand for porous tantalum for human body implant is becoming more and more urgent, and the requirements for it are also becoming higher and higher. As porous medical implant metal tantalum, if it has a high uniform distribution of connected pores and physical and mechanical properties suitable for human body, it is an important connecting material to ensure the normal growth of newborn bone tissue.
The medical implant made of porous tantalum material can be retained in the human body for a long time, with good support strength and better healing and fixation with the bone tissue around the human body. More importantly, the perforation hole in the center is also conducive to continuous intraoperative and postoperative decompression. In short, the implantation success rate of porous tantalum rod described in the present invention is high.
