Question
Which of the following describes the points marked in the diagram?
| A. |
Oblique conjugate
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| B. |
Diagonal conjugate
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| C. |
Obstetric conjugate
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| D. |
True conjugate
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Show Answer
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Correct Answer � B
Explanation
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Answer- B. Diagonal conjugate
Diagonal conjugate : Distance between the lower border of pubic symphysis to the midpoint on the sacral promontory. It measures 12 cm.
The obstetrical conjugate is computed by subtracting 1.5 to 2.0 cm, depending on the height and inclination of the symphysis pubis.Normally the obstetrical conjugate measures 10 cm or more.
The true conjugate can be measured only on radiographic films because it extends from the sacral promontory to the top of the symphysis pubis.