Cobalt levels predict faulty hips

Elevated blood cobalt levels are a significant predictor of early failure of metal-on-metal hip replacements, even in asymptomatic patients, research confirms.

The UK study found a strong correlation between cobalt concentrations and the need for revision surgery with the DePuy ASR hip implants, which triggered a global scandal when they were withdrawn from 2009.

The clinical significance of metal leaching has been intensely debated; the current study claims to be the