Metal-On-Metal Systems

Almost a decade ago, artificial hips using metal-on-metal components became popular. However, some patients began to experience what were thought to be allergic reactions to the metallic ions in them. Today, recent research indicates inflammatory reactions cause severe damage to soft tissue, muscles, and tendons, being caused by release of metal debris in the artificial hips.

After several studies, unusual quantities of soft-tissue were noticed in patients who had hip resurfacing. Based on those findings, within five it was estimated that 1% of patients who underwent hip resurfacing would exhibit this soft-tissue damage.

DePuy Orthopaedics, maker of a metal implant used in hip resurfacing, has recently come under fire after the August recall of one of their systems. A recent study found that 3.4% of patients studied who received a metal implant made by that company suffered reactions to the metal debris. According to DePuy, the metal sensitivity was lower than what was said in the research above, claiming internal research and other studies found far fewer complications.

Orthopedic surgeons and professional groups of orthopedics are now looking deeper into the dangers of metal-on-metal hip replacement systems. Doctors are now recommending caution in the use of resurfacing on patients 55 and under. These cautionary considerations include testing for high levels of metallic ions in their bloodstreams and diagnostic scans to search for potential tissue damage.

Signs of metal-on-metal hip implant failure include:

• Swelling in implant area, Extreme Pain
• Dislocation of Implant
• A Clicking, Popping or Grinding Sound From Implant
• Loosening of Implant
• Inexplicable Hip, Thigh or Groin Pain
• Walking Pain
• Pain Rising from a Seated Position
• Pain with Weight Bearing