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Varitimidis SE, Dimitroulias AP, Karachalios TS et al. Acta Orthop 2009;80:20–5.

Early results of tantalum rod implantation in the pre- and post-collapse stages of femoral head osteonecrosis are presented in this article. Improved function rather than disease arrest would appear to be the main benefit.

 

The incidence of osteonecrosis of the femoral head is rising. Although technology for diagnosing early disease has advanced, there is still no universally accepted treatment for disease at this stage. The use of tantalum rods was first proposed in 1997 after a magnetic resonance-based three-dimensional finite element model demonstrated that it was a reasonable mechanical substitute for a fibular graft by effectively reducing peak stress–strain ratios (Trans Orthop Res Soc 1997;22:598).

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