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Related Experiment Video

Updated: Aug 5, 2025

Evaluation of Muscle Function of the Extensor Digitorum Longus Muscle Ex vivo and Tibialis Anterior Muscle In situ in Mice
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Two-headed extensor digitorum longus with coexisting additional tendinous slips.

Andrzej Węgiel1, Nicol Zielinska1, Łukasz Gołek1

  • 1Department of Anatomical Dissection and Donation, Medical University of Lodz, Poland.

Folia Morphologica
|March 27, 2023
PubMed
Summary
This summary is machine-generated.

The extensor digitorum longus muscle shows significant anatomical variation. This study details a unique configuration with two heads and five distinct tendon slips, offering new insights into human morphology.

Keywords:
additional tendondouble-headextensor digitorum longusmuscle bellytendinous slipvariantvariation

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Area of Science:

  • Anatomy
  • Human Morphology
  • Musculoskeletal System

Background:

  • The extensor digitorum longus muscle is known for anatomical variations.
  • These variations often involve extra tendinous slips or atypical insertions.

Purpose of the Study:

  • To describe a novel anatomical configuration of the extensor digitorum longus.
  • To document variations in its tendinous slips and connections.

Main Methods:

  • Detailed anatomical observation and description.
  • Morphological analysis of the extensor digitorum longus.

Main Results:

  • A new configuration of the extensor digitorum longus was identified.
  • This variation features two distinct muscle heads.
  • The muscle has two main tendons that bifurcate into five slips, with further interconnections.

Conclusions:

  • The findings highlight the extensive variability in human musculoskeletal anatomy.
  • This detailed description contributes to a deeper understanding of lower limb morphology.
  • Awareness of such variations is crucial for clinical and surgical contexts.