it's quick, easy and something everyone can agree on. ♪ nutella. breakfast never tasted this good. >> in this morning's "medical alert" the latest research on hip replacements confirms their high failure rate leaving many orthopedic surgeons to say there is no reason to use them at all. erika edwards has more. >> hip replacement therapy has helped thousands resume active lifestyles. but research shows their energy levels are likely to out-last their frand brand new artificial hips if they are metal-on-metal implants. that means both the device and socket are made of metal. >> i would not have a metal on metal hip replacement if i were going to have one myself. >> strong words from dr. david mauerhand. he and many orthopedic surgeons around the country have stopped using the metal implants because they are likely to wear out in five years and some cases tiny metal fragments can slough off. >> it can lead to destruction of soft tissue and pain and decreasing function. >> now a new analysis of more than 400,000 hip replacements confirms the metal-on-m