3D pelvimetry and biometric measurements: a surgical perspective for colorectal resections

• DOI: 10.1007/s00384-020-03802-9
• Publication Date: 2020-11-23T21:12:10Z
• Authors: Laura Lorenzon; Fabiano Bini; Federica Landolfi; Serena Quinzi; Genoveffa Balducci; Franco Marinozzi; Alberto Biondi; Roberto Persiani; Domenico D’Ugo; Flavio Tirelli; Elsa Iannicelli
• Keywords: Coccyx; Pelvimetry; Promontory; Mesorectum; Ischial tuberosity

Abstract Purpose Male sex, high BMI, narrow pelvis, and bulky mesorectum were acknowledged as clinical variables correlated with a difficult pelvic dissection in colorectal surgery. This paper aimed at comparing biometric measurements female male patients providing perspective on how pelvimetry segmentation may help visualizing mesorectal distribution. Methods A 3D software was used for of DICOM data consecutive aged 60 years, who underwent elective abdominal CT scan. The following estimated: inlet, outlet, depth; pubic tubercle height; distances from the promontory to coccyx S3/S4; distance S3/S4 coccyx’s tip; ischial spines distance; tilt; offset angle; inlet angle between inlet/sacral promontory/coccyx; promontory/coccyx/pelvic outlet; S3 depth ratio. compared males females using statistical analyses. Results Two-hundred (M/F 1:1) analyzed. Out 21 measurements, 19 them documented significant mean difference groups. Specifically, had significantly wider outlet but shorter depth, promontory/sacral/coccyx distances, resulting an augmented inlet/depth ratio when ( p < 0.0001). sole exceptions straight conjugate = 0.06) 0.17). provided distribution according shape. Conclusion Significant differences structure pelvis exist females. Surgeons must be aware shape approaching rectum.