Since the introduction of Dr. John Charnley’s “low-friction arthroplasty” in 1962, the general concepts of total hip arthroplasty have remained greatly unchanged. He laid the foundation for a predictably successful surgical intervention for an ailment previously difficult to treat. The low-friction arthroplasty featured a monoblock stainless steel femoral stem, high density polyethelene, self-curing polymethyl-methacrylate (PMMA), and aseptic technique. Although the general principles of arthroplasty have remained remarkably similar implant design has evolved over the past 50 years.The following is a review of the evolution of the femoral stem.



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