Lifestyle changes can prevent arthritis, knee replacement

Studies have shown that nearly half of adults will get knee arthritis in at least one knee by age 85. For obese people, the risk is even greater.

Taking a few small steps toward protecting your knees when you are younger might help you avoid debilitating problems when you get older.

Exercises like swimming, cycling and other low-impact options better protect your knees than running or aerobics. Strengthening your core muscles (abs, back and pelvis) is another key component of maintaining healthy knees.