Advantages of titanium as an orthopedic implant material

The advantages of titanium as an orthopedic implant material are mainly reflected in the following aspects:

1、Biocompatibility:

Titanium has good biocompatibility with human tissue, minimal biological reaction with the human body, is non-toxic and non-magnetic, and has no toxic side effects on the human body.

This good biocompatibility allows titanium implants to exist in the human body for a long time without causing obvious rejection reactions.

2、Mechanical properties:

Titanium has the characteristics of high strength and low elastic modulus, which not only meets the mechanical requirements, but also is close to the elastic modulus of natural human bone.

This mechanical property helps to reduce the stress shielding effect and is more conducive to the growth and healing of human bones.

The elastic modulus of titanium alloy is low. For example, the elastic modulus of pure titanium is 108500MPa, which is closer to the natural bone of the human body, which is

conducive to bone setting and reducing the stress shielding effect of bones on implants.

3、Corrosion resistance:

Titanium alloy is a biologically inert material with good corrosion resistance in the physiological environment of the human body.

This corrosion resistance ensures the long-term stability of titanium alloy implants in the human body and will not pollute the physiological environment of the human body due to corrosion.

4、Lightweight:

The density of titanium alloy is relatively low, only 57% of that of stainless steel.

After being implanted into the human body, it can greatly reduce the load on the human body, which is especially important for patients who need to wear implants for a long time.

5、Non-magnetic:

Titanium alloy is non-magnetic and is not affected by electromagnetic fields and thunderstorms, which is beneficial to the safety of the human body after implantation.

6、Good bone integration:

The naturally formed oxide layer on the surface of titanium alloy contributes to the occurrence of bone integration and improves the adhesion between the implant and the bone.

Introducing two most suitable titanium alloy materials:

TC4 performance:

TC4 alloy contains 6% and 4% vanadium. It is the most widely used α+β type alloy with the largest output. It has medium strength and suitable plasticity. It is widely used in aerospace, aviation, human implants (artificial bones, human hip joints and other biomaterials, 80% of which currently use this alloy), etc. Its main products are bars and cakes.

Ti6AL7Nb performance

Ti6AL7Nb alloy contains 6% AL and 7% Nb. It is the most advanced titanium alloy material developed and applied to human implants in Switzerland. It avoids the shortcomings of other implant alloys and better plays the role of titanium alloy in ergonomics. It is the most promising human implant material in the future. It will be widely used in titanium dental implants, human bone implants, etc.

In summary, titanium as an orthopedic implant material has the advantages of excellent biocompatibility, mechanical properties, corrosion resistance, light weight, non-magneticity and good bone integration, which makes titanium an ideal choice for orthopedic implant materials.