In this article from The New York Times, a reporter talks to patients and experts about "squeaking" hip replacements. One study has found that about seven percent of patients who received ceramic hips from 2003 to 2005 developed squeaking, while no squeaks occurred among a control group of 48 patients who received hips made of metal and plastic. Now some patients say the sounds are interfering with their daily lives, and some doctors are concerned these sounds might signal a problem with the joints. (Access to this article requires free registration.)