Joint replacement gives seniors leg up on activity, longevity

The Sacramento Bee reports:

Today, Americans undergo more than 1 million of these knee and hip procedures each year, and a growing number are performed on people in their 50s and 60s.

For example, almost 5 percent of people ages 50 and older have had knee replacement surgery, the American Academy of Orthopaedic Surgeons says – and so have 10 percent of people 80 and older.