Bones and joints Archive

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.

Image: Thinkstock

Ask the doctor

Q. I occasionally use a brace on my knee because I have knee arthritis. Am I weakening my knee?

A. The benefit of a brace for knee arthritis is likely in the eye of the beholder. A brace can help improve the ability to perform certain activities, and for some people the compression and warmth of the brace relieves pain. However, medical research has been mixed on the absolute benefits.

Ask the doctor

Q. My right hand goes numb when I open a can or use hand tools. Is this something I need to worry about? Do I have carpal tunnel syndrome?

A. The hand receives its sensory information from three different nerves, and irritation of any of them can lead to numbness. In the hand, numbness is often related to the way that the nerve is compressed or squeezed slightly when you bend your wrist, as happens when you open a can. Excess vibration or repetitive hand motion when you use tools may also cause numbness.

If knee pain and swelling are severe an are not getting better, see your primary care doctor for a thorough evalucation. Image: Thinkstock

Arthritis is not the only possible cause of knee pain, swelling, and disability.

Ask the doctor

Q. I take warfarin for my atrial fibrillation. I know it can increase the risk of bleeding. Is it okay for me to take ibuprofen for my arthritis?

A. In general, you should avoid ibuprofen—which is sold as Advil, Motrin, and generics—while taking warfarin, because taking them together may further increase your risk of bleeding.