Hip revision due to metal on metal ions.

My husband has two great Metal on Metal (MoM) hips from 2008 and 2010. He and surgeon chose these types of replacements as being appropriate for an athletic person, and he has been able to downhill ski with them. Now he has rising levels of chromium and cobalt, released from friction between the metal surfaces, and many aches and pains throughout body. There is an "impressive" pocket of inflammatory fluid around one hip joint (where metal ions are being released) and we are being advised to have a revision where one of the metal parts is replaced with ceramic. This is pending another blood test and a MARS MRI in 5 months. Appreciate hearing from any others with this experience. Thank you.