Sunday, June 26, 2011

In Medicine, New Isn’t Always Improved


nytimes

IT is an American impulse to covet the new and improved — whether it's a faster computer, a smarter cellphone or a more fuel-efficient car. And in medicine, too, new drugs, devices and procedures have advanced patient care.

But the promise of innovation can also prove a trap, a situation now playing out with dire consequences for possibly tens of thousands of people who received artificial hips intended to let them remain active.

The implants, known as metal-on-metal hips, were regarded by device makers and surgeons as a major advance over previous designs that used both metal and plastic. Now federal regulators and medical researchers are scrambling to determine how many implant recipients have been injured by the devices, which can shed dangerous metallic debris through wear.  [....]

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