Hip Replacement Longevity - Secrets Of Long Life Unearthed

Hip replacement surgeries have revolutionized the field of orthopedics by adding an attractive treatment option for people with painful hips and difficult movements at the hip. But ever since the treatment has come into practice, the question of hip replacement longevity has raised waves. Most show an average life span of ten to fifteen years, though it may vary from person to person. Half of the people requiring a correction surgery have a worn out acetabulum. The acetabulum is made of a polyethylene compound which, on wear with the metallic femoral head, produces wear debris and resorption of bones. This process loosens the replacement implants and calls for revision surgery. The acetabulum of the replacements may become oxidized and fragile, compromising the lifespan of the implant.

Orthopedic surgeons try a variety of implant material to overcome the restricted hip replacements longevity. Ceramic is a material shown to have a high resistance to wear and tear in hip replacements. The material, if used as an acetabulum liner, may increase the longevity of the implants. Another popular choice is the metal lined acetabulum with a metal femoral head. The implant is very hard wearing, but there are still doubts regarding the bioacceptability as there is an increase in the immune responses. The existing ultra-high molecular weight polyethylene can also be modified to suit the need of long life hip implants. The polyethylene is modified by cross linking the chains to provide extra stability towards friction forces. The cross linked type of replacement implant has shown good results in terms of extending the life span of the implant. Many research works are still under progress to enhance implant longevity.

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.