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Artificial Joints: Engineers Are Involved In a £4 Mil Research Project to Investigate Ways of Developing a New Generation that Last Longer

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February 22, 2021

Artificial Joints: Engineers are involved in a £4 million research project to investigate ways of developing a new generation of artificial joints that last longer, produce fewer side effects, and are better suited for younger patients.

The international collaboration, led by the University of Leeds and funded by the EU’s Horizon 2020 program, will focus on improved design and testing to reduce the chance that the implants develop faults and fail, or cause orthopedic complications.

More than 100,000 artificial joints are fitted every year in the UK. The devices have improved the quality of life for hundreds of thousands of people. But over the last two decades, problems have emerged with implants that have been painful, worked loose or deposited microscopic debris into the tissue surrounding the joint, causing severe inflammation.

Failure rates within ten years of an artificial joint is fitted range from a few percent to greater than 30 percent, depending on the type of device.

Engineers believe problems have arisen with some implants because of weaknesses in the way they were tested prior to being approved for use. The testing failed to evaluate real-world wear and tear.

Professor Richard Hall, from the School of Mechanical Engineering at Leeds, is the project’s principal investigator. He said: “Total hip and knee replacement is now an established technique that has been hugely successful. Implant technology can improve lives.

“But over the last 20 years, there have been high-profile problems with some implants failing or causing complications which require patients to have repeat surgery.

“In addition, surgeons are fitting new hips and knees to patients who are younger, heavier, and more active. That means the devices are under even greater stress. They also want to fit artificial joints in ankles and fingers and they have higher failure rates.

“To overcome these challenges, manufacturers need more accurate testing and better design. We are working with industrial, clinical, and academic partners to make that happen, to produce artificial joints that are fit for purpose.”

The researchers hope to use advanced computer simulation and laboratory tests that capture a more accurate picture of implants’ performance in a range of human activities including running, walking, jumping, and stumbling.

Better testing will inform design that meets the functional requirements of the implants.

In a break with previous testing methods, the researchers want to develop “in situ” analysis, so the performance of the device is monitored while it is being subject to mechanical testing. That will result in earlier identification – and rectification – of problems.

The main project partners are ETH Zurich, Uppsala University, and Lulea Technical University, both in Sweden and Imperial College London. The project will also train early career researchers for the medical devices industry.

Medical Device News Magazine
Medical Device News Magazine provides breaking medical device / biotechnology news. Our subscribers include medical specialists, device industry executives, investors, and other allied health professionals, as well as patients who are interested in researching various medical devices. We hope you find value in our easy-to-read publication and its overall objectives! Medical Device News Magazine is a division of PTM Healthcare Marketing, Inc. Pauline T. Mayer is the managing editor.

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