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http://www.medicalnewstoday.com/releases/245061.php

Longer Lasting Hip Implants

Hip replacement is one of the most frequent operations carried out in Germany. Each year, doctors implant some 200,000 artificial hip joints. Often the artificial hips need to be replaced just ten years later. In the future, a new implant currently being developed using high technology materials could help prevent premature revision surgeries.

Thanks to artificial hips, people with irreparable damage to the joint have been able to lead active, pain-free lives for the past 50 years. Still, some hip replacements do not function completely as intended, and metal-on-metal implants in particular, demand accurate positioning in surgery and implants positioned non optimally are often susceptible to premature failure notably in small female patients. Physicians are even calling for a prohibition on the use of artificial joints made of cobalt-chromium alloys in which the joint's metal ball rubs against its metal socket whenever the wearer walks. Poorly designed or positioned metal on metal implants can lead to higher wear rates and this releases elevated cobalt-chromium ion levels that spread out through the blood and lymph, potentially damaging organs and triggering inflammation. Metal ions are also suspected carcinogens. Because these hip replacements are so robust, however, to date they have often been implanted in young, active patients. (more...)


Additional References Citations
Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
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Very interesting article - glad to read that they are 'at last' addressing this problem - problem of metal-on-metal.

Me too Molly. I don't like the idea of all of that metal either. Have a couple of steel rods in my back right now but wish they would come up with something else.

When I had my hips replaced I made sure I did not get metal-on-metal implants. They just sound like a bad idea!
The main part of my implants are titainium, but the socket has a plastic liner and the ball is ceramic.
My surgeon said that the average hip replacement lasts for ten years, but mine should last two to three times longer. This is mostly because I am underweight. Everyone can expect different life spans on their replacements due to different circumstances.