Recurrent breech presentation is due to:
**Core Concept**
Recurrent breech presentation is a clinical scenario where a fetus assumes a breech position multiple times during pregnancy, often requiring obstetric intervention. The underlying cause is often related to fetal or maternal factors affecting the normal fetal movement and positioning.
**Why the Correct Answer is Right**
The most common cause of recurrent breech presentation is a fixed flexion deformity of the hip joint, also known as congenital dislocation of the hip (CDH). This condition can lead to the baby's legs being positioned in a way that makes it difficult for them to assume a normal head-down position. This fixed flexion deformity can be caused by various factors, including genetic predisposition, intrauterine constraint, or maternal factors such as diabetes.
**Why Each Wrong Option is Incorrect**
**Option A:**
*Not relevant to recurrent breech presentation*
**Option B:**
While oligohydramnios (a condition characterized by low amniotic fluid levels) can affect fetal movement and positioning, it is not the primary cause of recurrent breech presentation.
**Option C:**
Uterine anomalies, such as a bicornuate uterus, can increase the risk of breech presentation, but they are not the primary cause of recurrent breech presentation.
**Clinical Pearl / High-Yield Fact**
A key factor to remember is that congenital dislocation of the hip (CDH) is a common cause of recurrent breech presentation, and it is essential to screen for this condition in women with a history of breech presentation.
**Correct Answer: D. Congenital dislocation of the hip (CDH)**