Pubic Arch Angle Postural Mobility Evaluation in Different Patient's Positions for Clinical Research

Area of Science:

• Obstetrics and Gynecology
• Biomechanics
• Medical Imaging

Background:

• Childbirth involves maternal pelvis and fetal adaptation.
• Pelvic mobility is key for favorable obstetric outcomes.
• Pubic arch angle (PAA) changes during pregnancy and with hip flexion, influencing pelvic dimensions.

Purpose of the Study:

• To describe a technique for evaluating PAA amplitude changes in various maternal positions using ultrasound.
• To provide a tool for clinical research in labor biomechanics.
• To assess the impact of maternal positioning on pelvic dimensions relevant to labor and birth.

Main Methods:

• Describing a 2D ultrasound technique to assess PAA.
• Evaluating PAA in supine (hyperextension to hyperflexion), kneeling, and standing positions.
• Utilizing perineal transducer placement to visualize pubic symphysis and ischiopubic branches.

Main Results:

• Positional changes in hip flexion significantly alter pelvic diameters and PAA.
• Ultrasound can assess PAA changes in different maternal positions.
• Preliminary studies show significant positional differences in PAA and pelvic measurements.

Conclusions:

• Assessing PAA in various maternal positions using ultrasound is a practical tool for research.
• This method can aid in predicting labor dystocia and birth trauma.
• Further research will refine understanding of pelvic dimensions, fetal progression, and obstetric outcomes for safer childbirth.