Complaints undermine hip device

Zimmer Holdings says it will suspend sales of the Durom cup, an artificial hip component, that some doctors have complained was failing at a high rate. In recent months, some doctors have complained that the device was failing in their patients, who then had to undergo replacement surgery. Zimmer said its investigation had determined that the product was not defective, but added that even some experienced surgeons had found it difficult to implant. The company said it expected to resume sales once specialized training for doctors had begun.