Education Policy | Post Primary | Preschool | Primary | Tertiary | Search

 


Canterbury researcher producing hip replacement sound device

Canterbury researcher producing hip replacement sound device

July 8, 2014

A University of Canterbury mechanical engineering researcher is working on a sound device to listen to the performance of hip and joint replacements.

Dr Geoff Rodgers is helping Christchurch Hospital’s orthopaedic department to develop a device which monitors patients with hip replacement implants. The device is intended to help surgeons diagnose any implant problems and manage patient treatment and revision surgery.

“The monitoring technique measures vibrations that are created by the implant and make it through tissue to the skin surface,” Dr Rodgers says.

“The vibrations are related to observed implant failures and clinical outcomes to help detect implant loosening or any deterioration. The monitoring technique could also be used to assess the performance of different implant designs.

“The ability to observe sounds and relate them to implant condition is entirely non-invasive and can detect issues when a patient is moving. This is just not possible with traditional techniques such as x-ray, where patients are required to remain still.

“Results to date have shown some significant promise, with the movement between different implant components displaying clearly different sound signals. We can also detect loosening of the implant within the bone and sounds such as squeaking, grinding or clicking from the implant.”

Total joint replacement surgery is typically the last resort for people with osteoarthritis also known as degenerative joint disease. Joint replacements are on the rise, largely due to demographic ageing.

The number of total knee replacements performed in the United States will leap by 673 percent to 3.48 million by the year 2030 with hip replacements increasing 174 percent to 572,000.

Replacement surgery is extremely successful but joints need to be replaced due to wear or premature loosening of the implant after every 10 to 15 years.

“The more primary joint replacements surgeries there are, the more revision joint replacement surgeries there will be, creating a significant and increasing burden, in dollars and use of limited surgical services.

“This epidemic of total joint replacements creates a huge challenge to develop and implement effective screening programmes for detecting early wear or failure, and clear diagnostic indicators for orthopaedic surgeons to properly manage revision surgery.

“Long-term, patients could wear the device over hours or days during their normal day-to-day activities, allowing surgeons to assess patients under conditions not previously possible.”

Dr Geoff Rodgers is collaborating with Dr Tim Woodfield and Prof Gary Hooper at the University of Otago.

ENDS

© Scoop Media

 
 
 
 
 
Culture Headlines | Health Headlines | Education Headlines

 
Scoop Review Of Books: Excerpt - Ice Bear: The Cultural History Of An Arctic Icon

“During the last decade the image of the polar bear has moved in the public imagination from being an icon of strength, independence and survival in one of the most climatically extreme of world environments, to that of fragility, vulnerability and more generally of a global environmental crisis.” More>>

NZ Opera: Max Rashbrooke Reviews The Mikado

So concerns about the work of the piece have to be addressed; but they are complex, and probably better handled in another post. So what about this production itself? More>>

ALSO:

Scoop Review Of Books: The Typewriter Factory

I finished reading Don’t Dream It’s Over not long after it came out last August. I even started writing a review, which took something of an ‘I’m sorry people, but it’s already over’ approach. I’ve been pretty negative about journalism as it’s practiced in the mainstream (or MSM, or corporate media or liberal media or whatever terminology you prefer) for quite some time (see for example Stop the Press), and I believe the current capitalist media model is destructive and can’t be reformed. More>>

Sheep Update: Solo World Shearing Record Broken In Southland

Southland shearer Leon Samuels today set a new World solo eight-hours strongwool ewe-shearing after a tally of 605 in a wool shed north of Gore. More>>

ALSO:

Howard Davis Review: Dick Frizzell At The Solander Gallery

One of the most influential and celebrated contemporary Pop artists working in New Zealand, Dick Frizzell is mostly known for his appropriation of kitsch Kiwiana icons, which he often incorporates into cartoon-like paintings and lithographs. Not content with adhering to one particular style, he likes to adopt consciously unfashionable styles of painting, in a manner reminiscent of Roy Lichtenstein. More>>

Old Music: Pop Icon Adam Ant Announces NZ Tour

Following his recent sold out North American and UK tours, Adam Ant is celebrating the 35th anniversary of the release of his landmark KINGS OF THE WILD FRONTIER album with a newly-remastered reissue (Sony Legacy) and Australasian tour. More>>

Get More From Scoop

 
 

LATEST HEADLINES

 
 
 
 
Education
Search Scoop  
 
 
Powered by Vodafone
NZ independent news