What are the diameters of the pelvis?
Diameters
| Name | Description | Average measurement in female |
|---|---|---|
| Anatomical conjugate | Extends from the pubic symphysis to the promontory; | about 120 mm. |
| Diagonal conjugate | Extends from lower margin of the pubic symphysis to the sacral promontory; | about 130 mm. |
What is the smallest diameter of the pelvis?
Interspinous diameter – 10.5cm is the smallest among the options provided.
What is the narrowest diameter of the pelvic outlet?
11 cm wide
Which is the narrowest? The narrowest diameter for the fetus to pass through is the pelvic outlet, which is only 11 cm wide in the average female pelvis.
Which is the narrowest diameter of the pelvic inlet?
The narrowest diameter for the fetus to pass through is the pelvic outlet, which is only 11 cm wide in the average female pelvis.
What are the different types of pelvis?
The four different pelvis shapes are:
- Gynecoid. This is the most common type of pelvis in females and is generally considered to be the typical female pelvis.
- Android. This type of pelvis bears more resemblance to the male pelvis.
- Anthropoid. An anthropoid pelvis is narrow and deep.
- Platypelloid.
What is the rarest type of pelvis?
The platypelloid pelvis is also called a flat pelvis. This is the least common type.
What is the difference between the pelvic inlet and outlet?
Obstetric pelvic definitions and dimensions. The pelvic inlet is oval being widest transversely, the pelvic mid-cavity is circular, while the outlet is oval being widest anteroposteriorly.
What can you see on a pelvic Xray?
X-rays of the pelvis can reveal bone tumors and diagnose bone cancer. Fractured bones, joint location, and infections of the hip or pelvis can also be diagnosed with an X-ray. Certain types of X-rays can measure hip bone density and diagnose osteoporosis in and around the pelvis.
What is the average size of the female pelvis?
It is almost round in shape with an average transverse diameter of 13.5 cm and an average anteroposterior diameter of 12.5cm. This is bound anteriorly by the apex of the pubic arch, laterally by the ischial spines, and posteriorly by the tip of the sacrum.
How is the shape of the pelvic cavity determined?
Generally speaking, genetics and environmental factors determine the overall shape of your pelvis. In the 1930s, two researchers divided the pelvis into four different types. They largely based these pelvis types on the shape of the pelvic inlet, which is the upper area of the pelvic cavity.
What are the different parts of the pelvis?
The diameters of the female pelvis vary at different parts of the pelvis. The superior circumference of the true pelvis is the pelvic inlet and the inferior circumference is the outlet. The true pelvis has four planes.