A hospital in Sweden could ban staff from wearing plastic clogs at work, including those made by US shoe firm Crocs.

Hospital officials have found that the slip-resistant, non-marking soles of such footwear generates static electricity that can knock out medical equipment, according to the Associated Press.

The problems have purportedly arisen at Blekinge hospital in southern Sweden, but without causing any injuries. There have been problems with a range of shoes not designed for hospital use, but Crocs has proven to be a particularly popular choice for medical staff in terms of comfort.

Crocs' supplier in Sweden was not available for comment when contacted by just-style.