Abstract
This radiographic study was focused on measuring the dimensions of pelvic bones at sites of minimally invasive screw insertion with the aim to assess the risk of damage to vascular and nervous structures.The group consisted of 77 patients (39 women and 38 men) aged between 19 and 85 years (average, 65; women, 65; men, 64) who underwent CT examination of the pelvis because of reasons other than injury. On the left side, a total of 14 dimensions of the superior pubic ramus, supraacetabular region, retroacetabular region, quadrilateral surface of the acetabulum and lateral foramina! sides of the S1 and S2 vertebral bodies were measured.
The results were evaluated using descriptive statistics. The results of the study showed that the size of the superior pubic ramus in its isthmic area may cause difficulties during insertion of cannulated screws with standard diameters (7.3 mm and 6.5 mm) in the majority of women and in some men.
The risk of damage to vascular and nervous structures during screw insertion is associated only with the superior and posterior walls of the superior pubic ramus and with the area of the S2 foramen in case the correct procedure of intraosseous screw insertion is not strictly followed.