A material is biocompatible if the body can function together with it without any complications like allergic or adverse reactions. An implant is biocompatible if the body undergoes the normal healing process after surgery .It is critical to look at the effects of the material on the surrounding tissues, but also on the effects of tissue on the implant material. There can be damage to the cells if tissue causes changes in the implant material. (e.g Wear and tear – creating small particles or corrosion)

The Biocompatibility of an implant is closely related to its chemical composition and material properties. The international standardization like ISO has defined the chemical composition of the implants materials. This standardization helps in developing the implants which are biocompatible and widely accepted.

The inability of an organism to reproduce is termed as sterile or sterility. There are various techniques to inhibit the reproduction and growth of micro-organisms .These techniques are termed as sterilization techniques. The presence and growth of micro-organisms on the surface of the implant material, make it unfit for the use. Therefore, to avoid this microbial contamination, finished product should be sterilized by validated sterilization techniques.

Also, there are chances microbial contamination of the implant during its transportation and if storage conditions are not good. These contaminations are difficult to eradicate by standard sterilization processes. To avoid the microbial contamination of the implants, the sterile implant should be packaged in manner which maintains the product sterility.

The flawless feature of the implant is related to its surface finish and corrosion properties.

Surface Finish - If we will observe a standard metal implant under microscope, we will see small micro –discontinuities or pits on its surface. These micro discontinuities are not visible under normal vision. These micro discontinuities provide the chance for growth of micro –organisms. To avoid such contamination the surface of the implants should improved.

Corrosion Resistance - The one mechanism that causes implants to fail is aqueous corrosion. Corrosion is unavoidable because the body is an aqueous medium containing various ions and organic substances, forming an electrolyte medium. The release of corrosion products may elicit an adverse biological reaction in the host . The presence of corrosion particle and wear product in the tissue surrounding may result in series of events leading to periprosthetic bone loss.

Therefore, it is critical to have an implant with improved surface finish and high corrosion resistant potential.