Nearly 1 in 20 Americans older than 50 have artificial knees, or more than 4 million people, according to the first national estimate showing how common these replacement joints have become in an aging population.

A wise man once said: "Honesty is such a lonely word. Everyone is so untrue. Honesty is hardly ever heard. And mostly what I need from you." Clearly, he was talking about his doctor.

Can a popular tactic for hiding fees survive in the era of fee disclosure?

The Retirement Income Industry Association and the Defined Contribution Institutional Investment Association have agreed to jointly manage a new working group of financial services and retirement industry firms to help providers of retirement income products, services and solutions collaborate to include life income options in defined contribution plans.