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Vaginal opening measurement in prepubertal girls
C W Goff1, K R Burke, C Rickenback
1Department of Pediatrics, Yale University School of Medicine, New Haven, Conn.
American Journal of Diseases of Children (1960)
|November 1, 1989
Summary
This study provides the first normative data on vaginal opening size in prepubertal girls. Results show the vaginal opening diameter generally increases with age and is larger in the knee-chest position, with openings over 4 mm being rare.
Area of Science:
- Pediatric gynecology
- Female reproductive health
- Child development
Background:
- Lack of normative data for vaginal opening size in prepubertal girls.
- Importance of establishing baseline measurements for clinical assessment.
- Need for age-indexed reference ranges.
Purpose of the Study:
- To report normative, age-indexed data on the apparent transverse diameter of the vaginal opening in prepubertal girls.
- To investigate the influence of patient positioning on measurements.
- To establish reference ranges for clinical use.
Main Methods:
- Cross-sectional study involving 273 prepubertal girls.
- Measurement of apparent transverse vaginal opening diameter during routine health assessments.
- Comparison of measurements in supine knee-chest and supine frog-leg positions.
Main Results:
- Vaginal opening diameter demonstrated a tendency to enlarge with increasing age.
- Measurements were larger in the supine knee-chest position compared to the supine frog-leg position.
- An opening diameter greater than 4 mm was found to be distinctly rare across the cohort.
Conclusions:
- The study establishes the first normative, age-indexed data for vaginal opening size in prepubertal girls.
- Age and positioning are factors influencing vaginal opening measurements.
- These findings provide valuable reference data for pediatric healthcare providers.