27/01/2026
๐๐ฑ๐ญ๐๐ซ๐ง๐๐ฅ ๐๐๐ฅ๐ฏ๐ข๐ฆ๐๐ญ๐ซ๐ฒ ๐๐ฌ๐ข๐ง๐ ๐ ๐๐๐ฅ๐ฏ๐จ๐ฆ๐๐ญ๐๐ซ | ๐๐๐๐ฌ๐ฎ๐ซ๐๐ฆ๐๐ง๐ญ & ๐๐ฏ๐๐ฅ๐ฎ๐๐ญ๐ข๐จ๐ง ๐จ๐ ๐ญ๐ก๐ ๐
๐๐ฆ๐๐ฅ๐ ๐๐๐ฅ๐ฏ๐ข๐ฌ | ๐๐ซ ๐๐๐ฃ๐๐ฆ ๐๐๐๐ญ๐ฎ๐ซ๐๐ฌ
Welcome to Dr. Najam Lectures!
In this practical demonstration, we teach you how to perform external pelvimetry using a pelvometer, a crucial method in assessing the female pelvis during antenatal care.
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๐๐:
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How to use a pelvometer correctly
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Measurement of pelvic diameters: interspinous, intercristal, external conjugate
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Clinical interpretation of pelvic measurements
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Importance of pelvimetry in obstetric care and labor planning
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๐ท ๐๐ก๐จ๐ฆ๐๐ฎ๐ฌ ๐จ๐ ๐๐ข๐๐ก๐๐๐ฅ๐ข๐ฌ
The Rhombus of Michaelis, also known as the Michaelis-Raute, is a diamond-shaped area on the lower back. It is defined by four anatomical landmarks:
* The dimples of Venus (posterior superior iliac spines)
* The top of the gluteal cleft (sacral vertebra S5)
* The lower end of the lumbar spine (approximately at L5)
During the second stage of labor, this area exhibits increased mobility. The backward movement of the sacrum and the outward flaring of the iliac wings enlarge the pelvic outlet, facilitating the baby's passage through the birth canal. This phenomenon is often referred to as the "opening of the back" and is a natural part of the birthing process.
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The Solovjov Index is an anthropometric measurement used to assess bone thickness, which can be indicative of pelvic dimensions. It is determined by measuring the circumference of the wrist joint:
* Solovjov Index = Wrist Circumference (in centimeters)
In obstetrics, this index helps estimate the obstetric conjugate diameter of the pelvis, which is crucial for evaluating whether a woman can safely deliver vaginally. A standard method involves subtracting a coefficient from the external conjugate measurement, with the coefficient value influenced by the Solovjov Index .
๐ฉบ ๐๐ฅ๐ข๐ง๐ข๐๐๐ฅ ๐๐ข๐ ๐ง๐ข๐๐ข๐๐๐ง๐๐
* Rhombus of Michaelis: Understanding its movement aids in recognizing the body's natural mechanisms to facilitate childbirth. Encouraging positions that allow this area to expand can support a smoother labor process.
* Solovjov Index: Provides a non-invasive method to estimate pelvic adequacy, especially in settings where advanced imaging is unavailable. It assists healthcare providers in making informed decisions about the mode of delivery.
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