Bones and joints Archive

Raynaud's phenomenon—an extreme reaction to cold—can be annoying, or it may signal a serious chronic condition.

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If you live in the northern latitudes, you may have already had an episode in which your fingers froze or your nose, toes, or earlobes grew cold, pale, and numb. And if you're a southerner, you might have neighbors who migrated to avoid such episodes. While some people with chilly fingers just have cold sensitivity, others—especially women—may have Raynaud's phenomenon.

What is Raynaud's?

Living with Raynaud's

Your ability to grab, hold, twist , and squeeze is essential for many everyday functions.

Image: JannHuizenga/Thinkstock

Think how much you rely on a strong grip every day. It helps you open cans, grip a golf club, hold a steering wheel, brush your teeth, and pick up a grandchild. "The ability to stay active and independent often begins with our hands," says Maria Cole, a physical therapist with Harvard-affiliated Spaulding Outpatient Center. "Weak grip strength can limit your enjoyment of many life pleasures, so you need to ensure your hand and grip strength always are up to the task."

A measure of health

Exercise your hands

A few simple exercises can preserve the strength and flexibility of your hands and wrists.

 Image: Thinkstock

There's a reason that "having a good grip on the situation" is used as a metaphor for mastery. In physiological testing, grip strength is one of the indicators of health and vitality. Yet, although we may exercise to strengthen our cores and limbs, most of us don't make an effort to strengthen our forearms and our hands. "We use our hands continually, but we don't take the time to deliberately exercise them," says Joanne P. Bosch, a physical therapist and certified hand therapist at Harvard-affiliated Brigham and Women's Hospital.

That said, it's not a good idea to rush out and buy a device promoted for building a "crushing hand grip" or to start squeezing a tennis ball. "Doing the wrong exercise can actually exacerbate some problems, particularly carpal tunnel syndrome," Bosch says.

A recent journal article describes Michelangelo’s hands as depicted in an attempt to figure out potential joint diseases he may have had. Theories suggest some myths and misconceptions about the causes and symptoms of osteoarthritis and gout. This report has implications for today’s medical care. While a picture may tell a story, there is nothing like a thorough, in person exam to know accurately make sense of signs and symptoms.

Your knee aches from time to time. Or maybe your fingers don't seem as nimble as they used to be. Could it be osteoarthritis?

Osteoarthritis, the most common form of arthritis, develops when cartilage, the flexible tissue lining the joints, deteriorates. As a result, the space between bones gradually narrows and the bone surfaces change shape. Over time, this leads to joint damage and pain.

The strength of your hands may hold clues to the health of your heart. A study in the December 2015 American Journal of Preventive Medicine found that people with stronger handgrips had more favorable findings on measures of their cardiovascular health than those with weaker grips.

The study included more than 4,200 adults ages 20 and older who were part of a nationwide health study. Researchers used a device called a dynamometer to measure each participant's hand strength, adjusting the readings based on body mass index. They found that higher handgrip strength was associated with lower blood pressure, lower triglycerides (a type of fat in the blood), lower blood sugar, and higher HDL (good) cholesterol.