Failure of metal radial head replacement.

@article{vanRiet2010FailureOM,
  title={Failure of metal radial head replacement.},
  author={RP van Riet and Joaqu{\'i}n Sanchez-Sotelo and Bernard F. Morrey},
  journal={The Journal of bone and joint surgery. British volume},
  year={2010},
  volume={92 5},
  pages={
          661-7
        }
}
There is little information available at present regarding the mechanisms of failure of modern metallic radial head implants. Between 1998 and 2008, 44 consecutive patients (47 elbows) underwent removal of a failed metallic radial head replacement. In 13 patients (13 elbows) the initial operation had been undertaken within one week of a fracture of the radial head, at one to six weeks in seven patients (seven elbows) and more than six weeks (mean of 2.5 years (2 to 65 months)) in 22 patients… 
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