Replacement Hip Materials - An Implant Of Substance

Hip implants replace the natural ball and socket joint of the hip. Although man made hips cannot be compared with the natural ones, the same properties are desirable in artificial replacements. The substance used should be strong, wear resistant and non corrosive. Replacement hip materials should possess endurance, sturdiness and high tensile strength. Most of all, materials should be biocompatible so that it is readily accepted by the body and does not cause immune response towards the replacement implant. There is no ideal implant material developed presently, but research is near to it.

Currently in practice are various kinds of materials used for making replacements. Polyethylene is utilized in making the acetabular component of the artificial hips. Metal in different alloy combinations finds its use in making both components of the implant. Cobalt, chromium and titanium are the most popular metals in use. A recent advancement in tribology has put ceramic in the limelight. Ceramics are considered the best replacement hip material owing to their wear resistant properties.

Artificial hips constitute various implant materials in a variety of combinations. The traditional implant containing polyethylene acetabulum with a metal cup, also known as metal-on-plastic bearing, still holds its place in surgery. Metal-on-metal implants are best known for their durability and less wear debris generation. Metal implants are long lasting but are associated with complications that limit its use. Metal-on-ceramic and ceramic-on ceramic are the latest trend and are becoming more successful. These implants are hard wearing and are resistant to friction forces. Ceramic bearing surfaces provide easy, painless movements at the hips and aids in early resumption of an active and fast moving life.

Also see; glossary of hip replacement terms & definitions.

About The Author:

Dr. Bharat Sharma is a successful author and regular contributor to http://www.hip-replacement-care.com. He has been working in the medical rehab field for more than a decade. Keeping up to date with techological advancements he has become a self appointed expert.