Shortened fetal femoral length

Shorted fetal femur is a morphological descriptor and is usually defined when the femoral length falls below the 5th centile for gestational age (some define it when it is under the 2.5th centile 5) or less than 0.91 predicted by the bi-parietal diameter. It can occur in isolated or in association with a number of other anomalies.

According to the former definition (e.g. using the 5th centile), the estimated incidence is at 5% of pregnancies.

Recognized associations include

If detected in the 2nd trimester, a careful search for any other fetal anomalies as well as a follows up scan later in the pregnancy6 is often recommended.

The prognosis can be variable depending on the presence of associated anomalies

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Article information

rID: 13481
Section: Gamuts
Tag: cases
Synonyms or Alternate Spellings:
  • Shortened femur
  • Short fetal femoral length
  • Short fetal femur
  • Shortened fetal femur
  • Short femur

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