These are risky, experimental procedures that could lead to real hazards if they fail.

Muscle death occurred and the doctors at the hospital tried a risky procedure in order to save his leg.

Why undertake this difficult, perhaps risky procedure, if she had a ready alternative?

The conditions were actually good for what was ordinarily a risky procedure.

Sometimes this can include senior doctors' performing risky procedures they have not done for a long time.

The transplant itself is a risky procedure, not guaranteed to be successful.

Her defibrillator is replaced every five years in a risky procedure.

Was there an ethical way to help her avoid a highly risky procedure?

They can't go start approving risky experimental procedures, that's what he said.

"I don't see this as being a very risky procedure," he said.