Genital Hiatus
Genital Hiatus - Related Videos
01:23
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07:41
Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
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Cited by 2 •
2019
Here we present a protocol to standardize the measurement of the levator ani hiatus size by magnetic resonance imaging. The purpose is to extract biomechanical inferences from image analysis by comparing resting and straining values in patients of both sexes with pelvic prolapse, using consistent anatomical bony landmarks.
FAQs
Function depends on a balance between openness and support. The levator ani muscles help maintain a supportive pelvic floor while leaving an opening that permits passage through the urethra and vagina. This arrangement connects the anatomy to urination, sexual function, and childbirth, while also explaining why changes in pelvic floor support can alter the size of the hiatus.
Widening reflects an increase in the size of the opening as pelvic floor support weakens. Because the hiatus exists within the support system surrounding the pelvic organs, enlargement may accompany reduced support for those organs. Clinicians therefore regard its size as a finding that may be associated with pelvic organ prolapse, rather than as an isolated anatomical variation.
Surrounding connective tissue contributes to support of the pelvic organs around the opening. Its role complements that of the levator ani muscles, which form the muscular pelvic-floor framework. Considering both tissues helps clinicians interpret the hiatus within the broader support system of the pelvis, rather than evaluating the opening without reference to the structures that surround it.
Clinicians assess the genital hiatus during pelvic examination and with imaging. These approaches provide information about the opening and its relationship to pelvic floor support. Evaluation is particularly relevant when pelvic organ prolapse is being considered, because widening may accompany weakened support. Using examination or imaging also allows findings to be documented for later comparison.
Measurement helps clinicians evaluate the severity of pelvic organ prolapse by documenting how widely the hiatus has enlarged. The value lies in relating an anatomical measurement to the condition of pelvic support. Rather than relying only on a general impression, clinicians can use the measurement as part of the assessment of prolapse and its progression.
After pelvic reconstructive surgery, repeated measurement can help monitor treatment outcomes. Comparing the hiatus over time provides a way to assess whether the anatomical finding associated with pelvic support has changed after reconstruction. This follow-up role makes the measurement useful not only for initial prolapse assessment, but also for evaluating results after surgical repair.