Fig. 6
From: Three-dimensional digital anatomical measurement of modified sacroiliac screws
a According to our requirements, the maximum screw radius and the maximum screw length were obtained by reading the cylinder properties after ideal screw placement; b The posterior superior iliac crest and the sacral midline on one side were marked, and the distance to the posterosuperior iliac crest and the sacral midline was measured using the centre of the cylinder as the starting point. The contralateral method was consistent