Featured Research

from universities, journals, and other organizations

Anterior cruciate ligament injuries may be prevented by different landing strategy

Date:
September 3, 2013
Source:
Oregon State University
Summary:
Women are two to eight times more likely than men to suffer a debilitating tear of the anterior cruciate ligament in the knee and a new study suggests that a combination of body type and landing techniques may be to blame.

Biomechanical model of a female using a “knock-kneed” technique and experiencing high frontal plane knee loading during a jump landing.
Credit: Marc Norcross

Women are two to eight times more likely than men to suffer a debilitating tear of the anterior cruciate ligament (ACL) in the knee and a new study suggests that a combination of body type and landing techniques may be to blame.

In two new studies published online this week in the Journal of Athletic Training, lead author Marc Norcross of Oregon State University documents how women who were asked to undergo a series of jumping exercises landed more often than men in a way associated with elevated risk of ACL injuries.

Both men and women tended to land stiffly, which can lead to ACL injuries, but women were 3.6 times more likely to land in a "knock-kneed" position, which the researchers say may be the critical factor leading to the gender disparity in ACL tears.

"We found that both men and women seem to be using their quad region the same, so that couldn't explain why females are more at risk," Norcross said. "Using motion analysis, we were able to pinpoint that this inability to control the frontal-plane knee loading -- basically stress on the knee from landing in a knock-kneed position -- as a factor more common in women.

"Future research may isolate why women tend to land this way," he added, "but it could in part be because of basic biology. Women have wider hips, making it more likely that their knees come together after jumping."

Norcross, an assistant professor of exercise and sport science in OSU's College of Public Health and Human Sciences, is a former collegiate athletic trainer dedicating his research to the prevention of ACL tears.

"You see ACL injuries in any sport where you have a lot of jump stops and cuts, so basketball, soccer, lacrosse, and volleyball are high-risk sports," said Norcross. "We know that people who hurt themselves tend to look stiff when they land and that the combined 'knee loading' from multiple directions is likely causing the injury event. But it wasn't clear initially why women had more injuries than men."

The researchers used motion analysis software to monitor the landing strategies of 82 physically active men and women. They found that both males and females had an equal likelihood of landing stiffly -- likely from tensing the muscles in their quads before landing -- putting them at higher risk of ACL tears. Women, however, were more likely to land in a "knee valgus" position, essentially knock-kneed.

Norcross said his next research project will focus on high school athletes, looking at a sustainable way to integrate injury prevention into team warm-up activities through improving landing technique.

"We are trying to create a prevention strategy that is sustainable and will be widely used by high school coaches," he said. "A lot of athletes do come back from an ACL injury, but it is a long road. And the real worry is that it leads to early onset arthritis, which then impacts their ability to stay physically active."

This study was supported by the NATA Research & Education Foundation Doctoral Grant Program.


Story Source:

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


Cite This Page:

Oregon State University. "Anterior cruciate ligament injuries may be prevented by different landing strategy." ScienceDaily. ScienceDaily, 3 September 2013. <www.sciencedaily.com/releases/2013/09/130903141354.htm>.
Oregon State University. (2013, September 3). Anterior cruciate ligament injuries may be prevented by different landing strategy. ScienceDaily. Retrieved April 15, 2014 from www.sciencedaily.com/releases/2013/09/130903141354.htm
Oregon State University. "Anterior cruciate ligament injuries may be prevented by different landing strategy." ScienceDaily. www.sciencedaily.com/releases/2013/09/130903141354.htm (accessed April 15, 2014).

Share This



More Health & Medicine News

Tuesday, April 15, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. Video provided by Newsy
Powered by NewsLook.com
How Mt. Everest Helped Scientists Research Diabetes

How Mt. Everest Helped Scientists Research Diabetes

Newsy (Apr. 15, 2014) British researchers were able to use Mount Everest's low altitudes to study insulin resistance. They hope to find ways to treat diabetes. Video provided by Newsy
Powered by NewsLook.com
Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Carpenter's Injury Leads To Hundreds Of 3-D-Printed Hands

Newsy (Apr. 14, 2014) Richard van As lost all fingers on his right hand in a woodworking accident. Now, he's used the incident to create a prosthetic to help hundreds. Video provided by Newsy
Powered by NewsLook.com
New Hepatitis C Treatment Boasts Over 90% Cure Rate

New Hepatitis C Treatment Boasts Over 90% Cure Rate

Newsy (Apr. 12, 2014) Scientists say a new treatment for hepatitis C could potentially cure the millions of people who are battling the infection. Video provided by Newsy
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:
from the past week

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