Hip revision surgery is a procedure performed when a previous hip replacement fails. Bradford S. Waddell, MD, explains that early hip replacements often failed due to the use of older plastics, which wore out quickly and required thicker pieces, leading to smaller femoral heads and a higher risk of dislocation. Advances in technology have introduced modern plastics that wear out less, allowing for larger femoral heads and reducing the risk of dislocation. Today, hip replacements may fail due to parts loosening, instability, or bone breaking around the implant. Waddell also discusses the historical use of metal-on-metal hip replacements, which, despite a 7-10% failure rate, have been largely abandoned due to the risks of metal particles damaging the body. Modern hip replacements have a significantly lower failure rate, attributed to improved tools, techniques, and materials, marking a significant advancement over past practices.
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