Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Osteoporosis Health Center

Font Size

Formula Predicts Women's Fractures

Bone Fracture Formula Looks at Weight, Bone Mineral Density, History of Falls and Fractures
WebMD Health News
Reviewed by Louise Chang, MD

Sept. 26, 2006 -- Australian researchers have come up with a mathematical formula to help predict bone fractures in women 60 and older.

The formula, described in Radiology's October edition, factors in bone mineral density at the hip and spine, history of fractures and falls, and weight.

Researchers included Margaret Joy Henry, BSc(Hons), PhD, at Australia's University of Melbourne.

Henry's team calls the formula the FRISK (fracture risk) score.

They created it by looking at 679 women age 60 and older. Participants included 231 women (average age: 74) who had had minor bone fractures in the two years prior to the study.

The other 448 women (average age: 72) hadn't had any bone fractures during that time.

Both groups included women with normal bone mineral density, osteopeniaosteopenia, and osteoporosisosteoporosis.

Osteopenia is bone mineral density that's lower than normal but not in the osteoporosis range. Osteoporosis is bone mineral density that's dangerously low, making fractures more likely.

Henry's team plugged the women's weight, bone mineral density at the hip and spine, history of falls, and previous fractures into their formula to get a FRISK score. Then the researchers tracked the women's fractures for the next five to six years.

During the first two years, the FRISK formula accurately predicted 75% of the women's fractures.

The odds of having a new fracture were higher for women with low bone-mineral density, past fractures, and a history of falls.

The findings about weight were a little more complex. Lighter women tend to have lower bone mineral density; heavier women often have higher density. And lighter women have been considered at greater risk for osteoporosis.

But after taking bone-mineral density into account, lighter women weren't at greater risk of fractures. That is, lighter women with strong bones weren't especially likely to have fractures.

In fact, adjusting for bone-mineral density showed that heavier women are at greater risk of fractures. Heavier weights apply more force to the skeleton during falls, the researchers note.

The formula's accuracy faded as the years passed, possibly due to factors not included in the formula, write Henry and colleagues.

The researchers are currently gauging fracture risk factors in men age 60 and older, according to a news release from the Radiological Society of North America, which publishes Radiology.

Today on WebMD

Women working out and walking with weights
Reduce bone loss and build stronger muscles.
Chinese cabbage
Calcium-rich foods to add to your diet.
woman stretching
Get the facts on osteoporosis.
Porous bone
Causes, symptoms, risk factors, and treatment.
senior woman
Woman holding plate of brocolli
wrist xray
Superfood for Bones
mature woman
sunlight in hands
man and woman in front of xray
woman with dumbbells