Hand biomechanics during simulated stone tool use.

@article{Rolian2011HandBD,
  title={Hand biomechanics during simulated stone tool use.},
  author={Campbell Rolian and Daniel E Lieberman and John Paul Zermeno},
  journal={Journal of human evolution},
  year={2011},
  volume={61 1},
  pages={26-41}
}
Human radial digits have derived features compared with apes, with long robust thumbs, relatively larger joint surfaces, and hypertrophic thenar muscles. Here we test the hypothesis that these features evolved in the context of making and using stone tools, specifically for producing large gripping forces and for countering large joint contact stresses. We used portable force plates simulating early stone tools to: 1) document and compare the magnitude of external/internal forces and joint… CONTINUE READING

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