Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Obesity hits below the belt: Overweight Americans suffer higher rate of knee cartilage tears

20.04.2005


As body mass index goes up, so does the risk of tearing meniscus

America’s expanding waistline is straining its knees--and pocketbook--with hundreds of thousands of overweight people undergoing surgery every year because the extra pounds they pack are leading to tears in their meniscal cartilage.

In the first major study of its kind, University of Utah School of Medicine researchers found the likelihood of tearing the meniscus, the cartilage that bears much of the load on the knee joint, increases dramatically with body mass index (BMI). (BMI is a measure of body fat based on height and weight. People with a BMI greater than 25 are considered overweight, and those with a BMI of more than 30 are considered obese.)



Overweight people are at least three times more likely to tear their meniscus, while the most obese men and women are 15 and 25 times, respectively, more likely to tear the cartilage, the U researchers report in the May edition of the American Journal of Preventive Medicine.

All the extra weight Americans are lugging around accounts for up to 450,000 out of 850,000 operations for meniscus tears annually, the researchers conclude. At an average of $3,000 per operation, that adds a whopper of a bill to the nation’s medical costs, according to Kurt T. Hegmann, M.D., M.P.H., research associate professor of family and preventive medicine, who led the study.

"There’s a potential savings of $1.3 billion in the costs associated with meniscus tears in overweight and obese people," said Hegmann, director of the U’s Rocky Mountain Center for Occupational and Environmental Health.

Hegmann and his U colleagues studied 515 patients who underwent meniscal surgery between 1996-2000 at LDS Hospital in Salt Lake City and Utah Valley Regional Medical Center in Provo, Utah. These patients were compared to a control group of 9,944 other Utahns enrolled in the National Cancer Institute’s Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial during the same years.

Participants were grouped into 10 BMI categories, ranging from 20 to greater than 40. The study participants also were grouped in three age categories--50-59; 60-69; and 70-79.

The researchers calculated the Mantel-Haenszel ratio--an age-adjusted odds ratio--for the likelihood of meniscal surgery and found that men with a BMI of 27.5 and higher and women with a BMI of 25 or higher were three times more likely to tear their meniscus. Men whose BMI exceeded 40 were found to be 15 times more likely to tear their meniscus; women in that BMI category were 25 times more likely to tear the meniscus.

"Since 57.4 percent (164 million people) of the U.S. adult population is either overweight or obese, this relationship has potentially large implications for meniscal surgeries," Hegmann and his colleagues state in the article.

The prescription to correct the problem is not complex.

"…A population-based weight management program could decrease future burden on orthopedic and medical-care systems due to meniscal surgeries and treatment of other obesity-related conditions," the researchers state.

Phil Sahm | EurekAlert!
Further information:
http://www.utah.edu

More articles from Health and Medicine:

nachricht NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures
17.11.2017 | National Institute of Standards and Technology (NIST)

nachricht High speed video recording precisely measures blood cell velocity
15.11.2017 | ITMO University

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: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>