Abstract:
Introduction: Assessment of the female pelvis size is an important obstetric practice to identify mothers at risk of cephalopelvic disproportion. However, clinical digital evaluation of the internal pelvic cavity is subjective and invasive, and imaging techniques are not available as a real-time bed-side tool in health centers of resource limited countries like Ethiopia. Unlike the lesser pelvic diameters, the greater pelvis and hip diameters can be measured easily and externally.
Objective: This study was aimed at assessing the correlation between anterior superior iliac spine diameter (ASISD) of the greater pelvis and inter trochanteric diameter (ITD) of the hip with obstetric conjugate diameter (OCD), transverse diameter of inlet (TDI), diameter of ischial tuberosities (DIT) and interspinous diameter (ISD) of the lesser pelvis.
Methods and Materials: The study employed institution based crossectional study design on randomly selected 423 abdominopelvic computed tomography images of reproductive age women who visited Wolaita Sodo Christian hospital from September 2018 to November 2020. Pelvic diameters were measured on multiplanar reconstruction and volume rendering image software. Pearson’s correlation, partial correlation and multivariate regression analysis were used for assessing the relationship between the variables via STATA 16 software.
Results: The study demonstrated that, intertrochanteric diameter (ITD) shows a significant positive correlation with all lesser pelvis parameters (r=0.32 to 0.56), and it can predict 9% to 31% of variations in them. while anterior superior iliac spine diameter (ASISD) has shown significant positive correlation with only transverse diameter of pelvic inlet (TDI) (r=0.44), with a 16% of prediction.
Conclusion and Recommendation: The study concludes the presence of significant correlation between lesser pelvis parameters with greater pelvis and hip diameters were observed. To obtain better perditions on lesser pelvis parameters, further studies by including additional anthropometric and pelvimetric variables is required
