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Titanium is widely used in artificial joint materials

According to relevant literature reports, about 100 million patients suffer from knee joint and arm joint related inflammation every year in the world, and replacement surgery is necessary for treatment, so the excellent replacement function of titanium alloy brings good news. Compared with ceramic, stainless steel and other materials, the elastic modulus of titanium alloy is closer to the human skeleton, and has more advantages in the modulus. Therefore, titanium alloy can be widely used in ankle joint, elbow joint correction. In addition, the porous titanium alloy material can make the prosthesis have biological activity, which is helpful to the healing of the femoral head. Titanium alloy surface has good biocompatibility and can induce the growth of bone cells, so it is highly praised by clinicians and orthopedic experts.

The advantages of titanium and titanium alloy as implants are as follows: (1) high strength, good chemical stability and good biocompatibility; ② non-toxic, will not cause harm to the human body; ③ Low elastic modulus, better match with human skeleton; ④ memory alloy has the ability of elasticity and shape recovery function. In conclusion, the application of titanium in skull repair is mainly reflected in the following aspects: repairing skull defects with titanium mesh. Its applications include the preparation of artificial heart valves, blood filters, pacemakers and artificial heart pumps.

It should be noted that titanium is not suitable for all artificial joint parts. In the joint parts, which often swing, titanium is not suitable for wear (ceramic and cobalt alloy are preferred), and titanium alloy should be used for implanted parts. In order to combine with the bone of the organism as soon as possible, the surface of the titanium alloy should be uneven and coated with Apatite and bioglass bone sensors.
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