Breech position, delivery route and congenital hip dislocation.

Area of Science:

• Obstetrics and Gynecology
• Pediatric Orthopedics
• Neonatal Care

Background:

• Congenital hip dislocation (CHD) is a condition affecting hip joint development.
• Breech presentation is a known risk factor for CHD.
• The optimal delivery mode for breech presentation to minimize CHD risk remains debated.

Purpose of the Study:

• To determine if the mode of delivery (vaginal vs. cesarean section) influences the incidence of CHD in fetuses presenting in breech position.
• To analyze the association between breech presentation and CHD.
• To evaluate the effectiveness of external cephalic version in reducing breech presentation-related CHD.

Main Methods:

• Retrospective analysis of 13,559 singleton births.
• Identification of fetuses in breech presentation (n=583).
• Comparison of CHD frequency in breech infants delivered vaginally versus by cesarean section.

Main Results:

• The overall incidence of CHD was 18.9 per mille for breech presentations versus 5.5 per mille for vertex presentations.
• No significant difference in CHD frequency was observed between vaginal and cesarean deliveries for breech infants.
• Of 11 breech infants with CHD, 5 required cesarean section.
• Breech presentation accounted for 13.3% of CHD cases, rising to 21.7% with external versions included.
• The female to male ratio for CHD was 4:1.

Conclusions:

• Mode of delivery does not impact the frequency of congenital hip dislocation in breech presentation.
• Breech presentation is a significant risk factor for congenital hip dislocation.
• Vaginal delivery may be a safe option for selected breech presentations regarding CHD risk.