Analytical, Diagnostic and Therapeutic Techniques, and Equipment

Crown-Rump Length

In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered a more accurate criterion of the age of the fetus than is the weight. The average crown-rump length of the fetus at term is 36 cm. (From Williams Obstetrics, 18th ed, p91)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

In utero measurement corresponding to the sitting height (crown to rump) of the fetus. Length is considered a more accurate criterion of the age of the fetus than is the weight. The average crown-rump length of the fetus at term is 36 cm. (From Williams Obstetrics, 18th ed, p91)

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Synonyms

4 entry terms
  • Crown Rump Length
  • Crown-Rump Lengths
  • Length, Crown-Rump
  • Lengths, Crown-Rump

MeSH Record

History Note

95

MeSH Hierarchy

Tree Numbers

  1. E01w.370.600w.115.100.160.100w.500w
  2. E01w.370.600w.115.450w.250w.500w
  3. E05.041w.124.160.500w.500w
  4. G07.100.100.160.100w.500w
  5. G07.100.100.250w
  6. G07.100.175w.250w.500w
  7. N06.850w.505.200.100w.400w

AMA Style

References

  1. National Library of Medicine. Crown-Rump Length. Medical Subject Headings (MeSH). 2026. Unique ID D018568. http://id.nlm.nih.gov/mesh/2026/D018568
  2. Crown-Rump Length. In: Wikipedia. https://en.wikipedia.org/wiki/Crown-rump_length
  3. Crown-Rump Length. In: Wikidata. https://www.wikidata.org/wiki/Q1414624