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The arcuate fasciculus: Combining structure and function into surgical considerations.

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The arcuate fasciculus (AF) is a white matter pathway crucial for language and other cognitive functions. Understanding its structure and function is vital for neurosurgery, particularly during glioma resection, to preserve patient abilities.

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Area of Science:

  • Neuroscience
  • Neurosurgery
  • Neuroanatomy

Background:

  • The arcuate fasciculus (AF) is a white matter pathway historically linking frontal and temporal cortices.
  • Its structural understanding and functional relevance have evolved with methodological advancements.
  • The AF's functions extend beyond language to encompass broader cognitive abilities, making it significant in neurosurgery.

Purpose of the Study:

  • To review the structural organization and functional implications of the arcuate fasciculus (AF).
  • To provide a frequency-based representation of AF connectivity and functions from existing literature.
  • To illustrate the clinical relevance of the AF in neurosurgical procedures, specifically glioma resection.

Main Methods:

  • Literature review focusing on the Superior Longitudinal System and the AF.
  • Analysis of reported wiring patterns and functional associations of the AF.
  • Case study presentation of four glioma resections involving the AF.

Main Results:

  • Identified common structural patterns and functional roles of the AF.
  • Highlighted interindividual variability in AF anatomy.
  • Demonstrated the necessity of understanding AF-structure relationships for surgical planning.

Conclusions:

  • The AF is a pivotal structure for diverse cognitive functions due to its extensive cortical connections.
  • Comprehensive knowledge of the AF's structural wiring and mediated functions is essential for neurosurgeons.
  • Preserving cognitive abilities during glioma resection necessitates careful consideration of the AF's integrity.