In rickets disease the type of pelvis may have risk is:
A. Gynecoid
B. Anthropoid
C. Platepeloid
D. Contracted
Correct Answer: D. Contracted
In rickets, which is a disease caused by vitamin D deficiency leading to defective bone mineralization, the pelvis can become deformed due to soft bones. This can affect childbirth.
The type of pelvis at risk in rickets is typically the “Contracted pelvis” (also called a “rachitic pelvis”), which is narrowed and deformed, especially in the inlet and mid-pelvis. This increases the risk of obstructed labor.
Other pelvis types for reference:
- Gynecoid: Normal female pelvis, ideal for childbirth.
- Anthropoid: Oval-shaped, usually adequate for childbirth.
- Platypelloid: Flat pelvis, may cause some difficulty in labor but less severe than rachitic.
✅ Key point: In rickets, the contracted (rachitic) pelvis is the type associated with childbirth complications.
Other Options Details
These terms describe types of female pelvis based on shape, which are important in obstetrics because they affect labor and delivery.
A. Gynecoid pelvis
- Most common and ideal pelvis in women
- Pelvic inlet is round or slightly oval
- Wide pelvic cavity and outlet
- Ischial spines are not prominent
- Best suited for normal vaginal delivery
B. Anthropoid pelvis
- Pelvic inlet is oval, longer anteroposteriorly
- Pelvis is narrow from side to side
- Sacrum is long and inclined backward
- Vaginal delivery is usually possible, but occiput posterior position is common
C. Platypelloid pelvis
- Pelvic inlet is flat and wide transversely
- Short anteroposterior diameter
- Sacrum is flat
- Engagement of fetal head is difficult
- Often associated with prolonged or obstructed labor
D. Contracted pelvis
- One or more pelvic diameters are reduced
- May be due to malnutrition, rickets, trauma, or congenital causes
- Can cause cephalopelvic disproportion
- Often leads to difficult labor and may require operative delivery or cesarean section
Summary:
- Gynecoid → best for normal delivery
- Anthropoid → vaginal delivery possible
- Platypelloid → difficult labor
- Contracted → high risk of obstructed labor
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Writer: Vandita Singh, Lucknow (GS India Nursing Group