New technology to test orthopaedic designs

July 25, 2013

Safer and longer lasting hip and knee replacements are expected from new technology to be developed at The University of Auckland's bioengineering institute.

The research is a collaboration led by Dr Thor Besier from the Auckland Bioengineering Institute (ABI), who is working with colleagues in biomechanics from Adelaide's Flinders University and the University of Melbourne.

A funding grant from the Australian Research Council will be matched by funds from industry partner De Puy, a subsidiary of Johnson and Johnson that specialises in .

"Our expertise is in creating models of the that can estimate muscle and joint loads that can be used to determine the loads placed on implants", says Dr Besier who is a Senior Research Fellow at the ABI and a Senior Lecturer at the Department of Engineering Science.

"Industry partner DePuy design hip and knee replacements and want to be able to test these new designs virtually before moving to clinical trials," says Dr Besier. "Assessing how an implant will behave across a patient population is challenging."

"We can investigate multiple designs early in the design process and then assess them against population-based models. These tools will shorten the design cycle, give greater insight into performance and lead to safer implants with improved longevity," he says.

"We have a unique dataset of 327 CT scans (via colleagues at the University of Melbourne). Using computational modelling of this CT data we can perform thousands of simulations and show the statistical variation in an implant and let them know if it will work well or not."

This speeds up the process of testing the new orthopaedic implant designs against patient and surgical variability and saves DePuy considerable time. The computer model gives us information on the implications of any design change, says Dr Besier.

The research team will include a post-doctoral student from ABI, Dr Ju Zhang whose doctoral research developed some of the core technology to be used in this project.

Explore further: Report: J&J recalls thousands of hip implants

Related Stories

Report: J&J recalls thousands of hip implants

February 14, 2013
(AP)—A German newspaper reports that Johnson & Johnson is recalling thousands of hip implants 2 1/2 years after a similar recall.

Engineers develop novel method to increase lifespan of joint replacements

July 10, 2013
Researchers at the University of Southampton have completed a project that will enable surgeons to fit joint replacements with longer, optimised lifespans. The MXL project uses computational modelling to define the mechanics ...

More data on knee replacements needed

March 7, 2012
(Medical Xpress) -- Oxford University experts have called for better monitoring of knee replacement surgery to improve outcomes for patients.

Engineering a better hip implant

September 18, 2012
University of Iowa researchers have determined that thigh size in obese people is a reason their hip implants are more likely to fail.

Study looks at longevity of total knee replacements in younger patients with juvenile arthritis

March 20, 2013
When you think of knee replacement surgery, you generally envision an older adult with painful arthritis. But the procedure is also used for younger patients with juvenile idiopathic arthritis (JIA) whose joints have been ...

Recommended for you

Drug therapy from lethal bacteria could reduce kidney transplant rejection

August 3, 2017
An experimental treatment derived from a potentially deadly microorganism may provide lifesaving help for kidney transplant patients, according to an international study led by investigators at Cedars-Sinai.

Exploring the potential of human echolocation

June 25, 2017
People who are visually impaired will often use a cane to feel out their surroundings. With training and practice, people can learn to use the pitch, loudness and timbre of echoes from the cane or other sounds to navigate ...

Team eradicates hepatitis C in 10 patients following lifesaving transplants from infected donors

April 30, 2017
Ten patients at Penn Medicine have been cured of the Hepatitis C virus (HCV) following lifesaving kidney transplants from deceased donors who were infected with the disease. The findings point to new strategies for increasing ...

'bench to bedside to bench': Scientists call for closer basic-clinical collaborations

March 24, 2017
In the era of genome sequencing, it's time to update the old "bench-to-bedside" shorthand for how basic research discoveries inform clinical practice, researchers from The Jackson Laboratory (JAX), National Human Genome Research ...

The ethics of tracking athletes' biometric data

January 18, 2017
(Medical Xpress)—Whether it is a FitBit or a heart rate monitor, biometric technologies have become household devices. Professional sports leagues use some of the most technologically advanced biodata tracking systems to ...

Financial ties between researchers and drug industry linked to positive trial results

January 18, 2017
Financial ties between researchers and companies that make the drugs they are studying are independently associated with positive trial results, suggesting bias in the evidence base, concludes a study published by The BMJ ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.