Sacro-Iliac Joint Sensory Block and Radiofrequency Ablation: Assessment of Bony Landmarks Relevant for Image-Guided Procedures

Table 3

Quantification of interforaminal and intertubercular distances.

PSF	Mean interforaminal distance ± SD (mm)			Mean intertubercular distance ± SD (mm)
	All (M + F)	Male	Female	All (M + F)	Male	Female
S1-S2
S2-S3
S3-S4
S1–S3

PSF, posterior sacral foramen (S1–S4); significant () difference between males and females.