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Purpose <p>Owing to its superficial location and accessibility, the anatomical snuff box is increasingly used for minimally invasive and image-guided procedures. This study evaluated the morphology and variations of its key neurovascular structures.</p> Methods <p>The study was conducted on 60 upper limbs (30 right and 30 left) from embalmed adult cadavers (15 males and 15 females; age range: 20–90&#xa0;years). After exposure of superficial structures, detailed dissection of the anatomical snuff box was performed. The tendons forming its boundaries, along with the cephalic vein, superficial branch of the radial nerve, and radial artery, were assessed for their course, depth, diameter, and related morphometric parameters.</p> Results <p>The cephalic vein diameter ranged from 1.22 to 3.98&#xa0;mm. The mean radial artery diameter was 2.65 ± 0.64&#xa0;mm. Both cephalic vein and radial artery diameters were significantly greater in males than females. A tortuous radial artery course was observed in 73.3% of cases, while the remainder showed a relatively straight course. Radial artery tortuosity was significantly more common on the right side.</p> Conclusion <p>A cephalic vein diameter of at least 2&#xa0;mm, considered suitable for arteriovenous fistula creation, was observed in 88.8% of cases. The radial artery diameter exceeded 2.3&#xa0;mm in 80% of specimens, supporting the feasibility of distal radial catheterization. Overall, the anatomical snuff box demonstrates favorable vascular dimensions for arteriovenous fistula creation and distal radial access. However, frequent radial artery tortuosity, particularly on the right side, should be considered during clinical interventions to minimize complications.</p>

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Reexploring the normal and variational anatomy of neurovascular contents of anatomical snuff box and their clinosurgical implications

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Richa Gupta,
  • Ranjna Janagal,
  • Chiman Kumari,
  • Tulika Gupta,
  • Anjali Aggarwal

摘要

Purpose

Owing to its superficial location and accessibility, the anatomical snuff box is increasingly used for minimally invasive and image-guided procedures. This study evaluated the morphology and variations of its key neurovascular structures.

Methods

The study was conducted on 60 upper limbs (30 right and 30 left) from embalmed adult cadavers (15 males and 15 females; age range: 20–90 years). After exposure of superficial structures, detailed dissection of the anatomical snuff box was performed. The tendons forming its boundaries, along with the cephalic vein, superficial branch of the radial nerve, and radial artery, were assessed for their course, depth, diameter, and related morphometric parameters.

Results

The cephalic vein diameter ranged from 1.22 to 3.98 mm. The mean radial artery diameter was 2.65 ± 0.64 mm. Both cephalic vein and radial artery diameters were significantly greater in males than females. A tortuous radial artery course was observed in 73.3% of cases, while the remainder showed a relatively straight course. Radial artery tortuosity was significantly more common on the right side.

Conclusion

A cephalic vein diameter of at least 2 mm, considered suitable for arteriovenous fistula creation, was observed in 88.8% of cases. The radial artery diameter exceeded 2.3 mm in 80% of specimens, supporting the feasibility of distal radial catheterization. Overall, the anatomical snuff box demonstrates favorable vascular dimensions for arteriovenous fistula creation and distal radial access. However, frequent radial artery tortuosity, particularly on the right side, should be considered during clinical interventions to minimize complications.