**Core Concept**
Internal podalic version is a procedure where the obstetrician manually converts a transverse lie to a breech presentation by inserting a hand through the cervix to grasp the fetal feet. This procedure is associated with a high risk of complications due to the manipulation of the fetus and the uterus.

**Why the Correct Answer is Right**
During internal podalic version in a transverse lie, the most common complication is uterine rupture. This occurs due to the increased pressure exerted on the uterus as the obstetrician attempts to convert the fetus's position. The uterus is already under strain in a transverse lie, and the additional manipulation can cause a tear or rupture, leading to severe bleeding and potentially life-threatening consequences. The risk of uterine rupture is higher in cases where the uterus is scarred from previous surgeries or in cases of obstructed labor.

**Why Each Wrong Option is Incorrect**
**Option A:** Uterine atony is incorrect because it is not directly related to the procedure of internal podalic version. Uterine atony refers to the failure of the uterus to contract after delivery, which can lead to postpartum hemorrhage.

**Option B:** Placental abruption is incorrect because it is not a direct complication of internal podalic version. Placental abruption refers to the separation of the placenta from the uterus, which can occur due to various factors such as trauma, hypertension, or placental insufficiency.

**Option C:** Fetal distress is incorrect because while it is a possible complication of any obstetric procedure, it is not the most specific or direct complication associated with internal podalic version in a transverse lie.

**Clinical Pearl / High-Yield Fact**
Internal podalic version should be avoided in cases of transverse lie due to the high risk of uterine rupture. The safest approach in such cases is to perform a cesarean section.

**Correct Answer:** C. Uterine rupture