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Table 1 Volumetric comparison of surgical anatomy

From: Volumetric comparative analysis of anatomy through far-lateral approach: surgical space and exposed tissues

Item Corridor 1 (mm3) Corridor 2 (mm3) p value
Mean SD Mean SD  
Operative space 5501.60 150.03 11430.00 1085.88 < 0.001
Bony drilling 1745.50 112.54 2763.50 145.15 < 0.001
Extra-cranial VA 64.05 1.34 95.53 1.08 < 0.001
BAa 28.90 1.84 37.86 1.41 < 0.001
Venous structures 72.36 1.63 205.69 14.10 < 0.001
CN Xb 5.50 0.20
CN XI 9.61 0.40 15.38 1.21 < 0.001
CN XII 11.20 1.07 13.55 1.23 < 0.001
  1. Comparison of the volumes (mm3) measured in corridors 1 and 2 (30 sides). p values < 0.05 indicate statistical significance. BA, basilar artery; CN X, vagus nerve; CN XI, accessory nerve; CN XII, hypoglossal nerve; VA, vertebral artery
  2. aBA was involved in 16 sides of 3D model
  3. bOnly corridor 2 involved CN X. Thus, the pair t test was not performed