A recently recalled artificial hip made by a unit of Johnson & Johnson, designed to last 15 years or more, is failing worldwide at unusually high rates after just a few years.
One of the most troubled orthopedic implants of the past decade, this artificial hip — known as the A.S.R., or Articular Surface Replacement — was originally promoted as a breakthrough in design that would last longer and provide patients more natural movement.
But many patients soon developed inexplicable pain, and surgeons, when replacing the implant, discovered mysterious masses of dead tissue near the thighs of some patients.
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