Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Ceramic Hip Implants Provide Alternative for Younger Patients--Rush Testing Material That May Be More Durable Than Plastic

05.11.2002


Indiana resident Luke Pascale runs two pizza restaurants and had worked out three times a week. He also enjoyed long bike rides with his wife, but last year, the pain in his hip became so severe he couldn’t stay on a bike for more than five minutes.



"I’m very active so the thought of having hip surgery was not pleasant," said the 53-year-old father of four from St. John, Ind.

Instead of receiving the traditional hip replacement surgery, which uses a metal ball bearing in a polyethylene and titanium socket to ensure strength and stability, Pascale chose to enroll in a new study using a ceramic-to-ceramic hip implant.


"Metal-to-polyethelene hip transplants have done yoeman’s work for most patients, but after about 15 years, the metal begins to wear the plastic down, creating in some patients, osteolysis in the hip, which occurs when particles break off from the implant," said Dr. Steven Gitelis, orthopedic surgeon at Rush. He is one of the few orthopedic surgeons in Chicago testing the ceramic implant as part of a research protocol that may lead to more extensive use of the ceramic hip implants. "With more people living longer, the expectation is that hip replacements should last longer, too," he added.

To address this durability and wear issue, researchers and manufacturers began testing a ceramic-to-ceramic hip implant in 1997. Results from wear testing and examinations post mortem have suggested that ceramic hips are more durable than metal on metal hip replacements and significantly more durable that metal on polyethelene.

A large-scale clinical trial was recently completed of 1,196 total hip replacements performed between 1997 and 2002. Of these, 405 hips were followed for a minimum of 24 months. The results showed no postoperative bearing fractures and no particles flaking off that might cause complications. Also, researchers performed wear studies on ceramic hip materials with a walking and motion simulator that showed ceramic hips are 4,000 times more durable than metal on polyethylene.

The ceramic implant is not approved by the Food and Drug Administration but Gitelis believes that once it is approved, patients will have more choices of materials.

"If I’m treating a patient in his 80s, I would probably still give them the metal to polyethylene implant," Gitelis said. "But, if I have younger patient who requires a total hip replacement, I would recommend the ceramic material as it gives the patient the best chance to avoid wear and adverse effects over the long term."

Some researchers also believe that the bacteria Staphylococcus epidermis adheres more strongly to polyethylene than ceramic, though Gitelis indicated that had not yet been proven scientifically. Use of the new ceramic material will not require any new technique nor will it force surgeons to use a different socket as the new ceramic bearing is designed to fit into existing socket.

Pascale had his surgery on June 11 and now reports little discomfort and is happy he chose ceramic over traditional metal to polyethelene.


Contact: Chris Martin (href=mailto:cmartin@rush.edu>v ) or
John Pontarelli (href=mailto:jpontare@rush.edu>jpontare@rush.edua)
Phone: (312) 942-7820 or 942-5579

Chris Martin | EurekAlert!
Further information:
http://www.rush.edu/servlets/Medrel/ShowContentServlet1?id=349&cid=74

More articles from Health and Medicine:

nachricht Correct connections are crucial
26.06.2017 | Charité - Universitätsmedizin Berlin

nachricht One gene closer to regenerative therapy for muscular disorders
01.06.2017 | Cincinnati Children's Hospital Medical Center

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Touch Displays WAY-AX and WAY-DX by WayCon

27.06.2017 | Power and Electrical Engineering

Drones that drive

27.06.2017 | Information Technology

Ultra-compact phase modulators based on graphene plasmons

27.06.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>