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Updated: May 21, 2026

Methods for In Vivo Biomechanical Testing on Brachial Plexus in Neonatal Piglets
Published on: December 19, 2019
Morphological structure and variations of lumbar plexus in human fetuses
Soner Yasar1, Serdar Kaya, Cağlar Temiz
1Department of Neurosurgery, Gulhane Military Medical Academy, Ankara, Turkey.
This study examined the fetal lumbar plexus anatomy. Findings reveal fetal lumbar plexus morphology closely resembles adult anatomy, offering insights for developmental studies.
Area of Science:
- Anatomy
- Embryology
- Neurology
Background:
- The lumbar plexus is crucial for lower limb and abdominal innervation.
- Understanding fetal development aids in diagnosing congenital anomalies.
Purpose of the Study:
- To investigate the anatomical structure of the human fetal lumbar plexus.
- To determine its morphometric characteristics and compare them with adult anatomy.
Main Methods:
- Dissection of 20 lumbar plexuses from 10 human fetal cadavers.
- Detailed examination of lumbar spinal nerves, ganglions, and peripheral nerves.
- Morphometric analysis of nerve diameters and lengths.
Main Results:
- Nerve diameters increased from L1 to L4.
- Femoral nerve was the thickest; ilioinguinal nerve was the thinnest.
- Fetal lumbar plexus morphology is highly similar to adult patterns, with minor variations noted.
Conclusions:
- The fetal lumbar plexus exhibits a morphological pattern comparable to adults.
- This similarity suggests established anatomical development early in gestation.
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