Clinical Report: Lateral Brain White Matter Microdissection Video Guide

Overview

This report summarizes a detailed video demonstration of the lateral brain white matter dissection technique based on the Klingler method. It highlights the historical context, fixation protocol, and stepwise dissection approach under microscopic visualization to enhance understanding of white matter anatomy.

Background

White matter dissection techniques have evolved since the early anatomical descriptions by pioneers such as Galen and Burdach. Josef Klingler significantly advanced the field by introducing a freezing step after formalin fixation, improving fiber tract visualization. Despite a decline in interest mid-20th century, renewed attention in the early 2000s emphasized the surgical relevance of white matter anatomy. The current video guide aims to provide a practical, stepwise tutorial for neurosurgeons and trainees to master lateral brain white matter dissection.

Data Highlights

The Klingler fixation protocol involves three phases: (1) fixation in 10% formalin for at least two months, (2) freezing at −10 to −15 °C for at least one week, and (3) thawing in water before dissection. The brain is suspended during fixation to avoid deformation. Dissection is performed under a surgical microscope using wooden spatulas, forceps, and scalpels, with hydration maintained by irrigation. Key anatomical landmarks such as the sylvian fissure, central sulci, and intraparietal sulcus guide the dissection.

Key Findings

• Klingler’s freezing technique remains the gold standard for white matter dissection due to its reproducibility and clarity of fiber tract separation.
• Microscopic visualization enhances precision and safety during dissection, as emphasized by Türe’s refinements.
• The double-C decortication method effectively exposes U-fibers by systematic removal of cortical grey matter.
• Careful identification of sulcal and gyral landmarks is critical for orienting the dissection and preserving anatomical relationships.
• Supplementary video materials provide a valuable visual aid for novices learning the dissection technique.

Clinical Implications

Understanding the detailed topography of lateral white matter tracts supports neurosurgeons in preoperative planning and intraoperative navigation, potentially improving surgical outcomes. The standardized Klingler protocol combined with microscopic dissection techniques offers a reproducible method for anatomical education and research. Incorporating video tutorials can accelerate skill acquisition for trainees.

Conclusion

This video-based overview of lateral brain white matter microdissection consolidates historical methods with modern refinements, providing a comprehensive educational resource. Mastery of this technique enhances anatomical knowledge critical for neurosurgical practice.

References

1. Klingler J. (1935) -- Anatomical Study of White Matter Fibers
2. Türe U. et al. (2000s) -- Microsurgical Anatomy of White Matter
3. Sulci, Gyri, Ventricles and Fiber Dissection Hands-on Course (2024) -- Video Demonstration