Sacral corridor height varies widely but does not affect operative time or radiation dose in CBCT-guided pelvic screw fixation. (n=115) No correlation seen; one adverse event (0.6%) reported. @JVIR_media #IRad

In 115 patients undergoing cone-beam CT-guided percutaneous pelvic screw fixation, S1/S2 intra-sacral corridor height varied substantially (median 23 mm, range 10–32 mm). However, no significant correlation was found between corridor height and operative time (ρ=0.043) or radiat…

• Median intra-sacral corridor height was 23 mm (IQR 21–26 mm), with a wide range from 10 to 32 mm, highlighting substantial anatomical variability.
• Corridor height did not correlate with operative time (Spearman’s ρ = 0.043, P = 0.65) or radiation exposure (Spearman’s ρ = -0.057, P = 0.55).
• Only one adverse event (0.6%) was reported, which was not associated with a smaller corridor height.

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