An autonomous mathematical reconstruction to effectively measure volume loss on retrieved polyethylene tibial inserts.

@article{Knowlton2013AnAM,
  title={An autonomous mathematical reconstruction to effectively measure volume loss on retrieved polyethylene tibial inserts.},
  author={Christopher B. Knowlton and Markus A Wimmer},
  journal={Journal of biomedical materials research. Part B, Applied biomaterials},
  year={2013},
  volume={101 3},
  pages={449-57}
}
Wear of the polyethylene tibial component is a major factor in the success of total knee replacements. However, sampling resolution and the challenges of estimating original surfaces with relatively complex articulating geometries have limited the accuracy of volumetric measurements of wear on surgically retrieved inserts. A mathematical model analyzed volume error due to sampling resolution and found that 100 × 100 μm(2) point spacing reduced error below 1 mm(3). Small volumes of material were… CONTINUE READING