Metal on metal hip replacement problems
A recent study from Belgium found that metal on metal hip replacements that included resurfacing resulted in pseudo tumors in 8% of cases. This required a revision due to loosening of the implant. This paper was presented at the American Academy of Orthopedic surgeons conference in March 2010.
The failure rate of metal on metal rates was about 8 % or more according to this study.
Ceramics, cross linked polyethylene, metal on metal are different types of bearings used in total hip arthroplasty. Ceramics and metal are hard bearings thought to reduce wear. However metal on metal implants resulted in a high early failure rate. It is thought that this complication could result from metal hypersensitivity.

Video testimonial of Grandon Benson from Seattle, Washington, USA. He underwent right Birmingham hip resurfacing by Dr.A.K.Venkatachalam of www.hipsurgery.in