The use of cement in partial hip replacement surgery may be linked to a risk of death - often occurring within minutes - finds research published in the online journal BMJ Open.
The risk is relatively rare. But the alarm was first sounded in 2009, and most of the cases that have come to light have occurred since that date, say the authors, who include the former chief medical officer for England.
This suggests that measures to reduce the risks are not being acted on widely enough, they say.