Featured Research

from universities, journals, and other organizations

Knee Problems Of The Super-obese

Date:
February 27, 2009
Source:
Mayo Clinic
Summary:
The knee joint is especially vulnerable to injury in both healthy-weight active people and those who are overweight. But until now, no one had published results of what happens to knee implants under the stress of extreme extra weight known as superobesity. Superobesity is defined as having a Body Mass Index (BMI) that is greater than 50. Normal-weight BMI ranges from 19 to 25.

The knee joint is especially vulnerable to injury in both healthy-weight active people and those who are overweight. But until today's Mayo Clinic presentation, no one had published results of what happens to knee implants under the stress of extreme extra weight known as superobesity. Superobesity is defined as having a Body Mass Index (BMI) that is greater than 50. Normal-weight BMI ranges from 19 to 25.

Related Articles


Replacing a knee joint is a common surgical procedure called total knee arthroplasty. What is less common is having a large enough group of superobese patients to comprise a statistically powerful sample to determine how implants fare in this population.

As a center of orthopedic excellence, Mayo Clinic surgeons treated 105 of these surgically and medically challenging patients between 1996 and 2006. The patients had a mean BMI of 53.6, and average age at the time of surgery was 61 years. Their outcomes were followed an average of three years after surgery.

Results showed:

  • Overall, 40.6 percent had surgical complications and 14.3 percent had medical complications — including two deaths after the surgery.
  • Surgical complications included 20 knees that had prolonged wound drainage —increasing the chance of deep infection of the implant.
  • Nineteen cases needed additional operations to trim slowly healing wound edges, treat deep infection or repair failed implants.

"As with hip replacement in the superobese patient, total knee arthroplasty also is associated with a markedly higher complication rate compared to patients of normal weights," says Mayo Clinic orthopedic surgeon David Lewallen, M.D., senior author on the study. "The real concern here is that clinicians and patients need to be aware of that fact when they are making treatment decisions. In general, this group of patients is in desperate circumstances — and we really want to help them. To do that, we are trying to get the data out there that will guide management of the superobese patient. A big part of that has to be helping them lose weight prior to knee arthroplasty whenever possible."

Mayo Clinic orthopedic surgeons presented this research at the annual meeting of the American Academy of Orthopedic Surgeons (AAOS) in Las Vegas, Feb. 25-March 1.


Story Source:

The above story is based on materials provided by Mayo Clinic. Note: Materials may be edited for content and length.


Cite This Page:

Mayo Clinic. "Knee Problems Of The Super-obese." ScienceDaily. ScienceDaily, 27 February 2009. <www.sciencedaily.com/releases/2009/02/090227130024.htm>.
Mayo Clinic. (2009, February 27). Knee Problems Of The Super-obese. ScienceDaily. Retrieved December 19, 2014 from www.sciencedaily.com/releases/2009/02/090227130024.htm
Mayo Clinic. "Knee Problems Of The Super-obese." ScienceDaily. www.sciencedaily.com/releases/2009/02/090227130024.htm (accessed December 19, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Friday, December 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins