Early prenatal attainment of adult metacarpal-phalangeal rankings and proportions.

  title={Early prenatal attainment of adult metacarpal-phalangeal rankings and proportions.},
  author={Stanley M. Garn and Alphonse R. Burdi and William J Babler and Sara Stinson},
  journal={American journal of physical anthropology},
  volume={43 3},
As shown in 56 human embryos and fetuses between 15 and 104 mm in crown-rump length, "adult" metacarpal-phalangeal length rankings are attained by the seventh intrauterine week and near-adult bone-to-bone ratios or proportions by the theirteenth week. Micrometric measurements of optically-projected histological hand sections show relative elongation of the distals between the 15-29 mm and 30-44 mm crown-rump range, and relative reduction to radiogrammetrically-determined adult proportions by… CONTINUE READING

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