**Core Concept**
Strassmann’s metroplasty is a surgical procedure to correct a bicornuate uterus by reshaping the uterine cavity to improve uterine symmetry and cavity size. The primary indication is related to reproductive outcomes, particularly those involving implantation failure or early miscarriage.

**Why the Correct Answer is Right**
A bicornuate uterus is associated with a distorted uterine cavity that may impair embryo implantation and increase the risk of early pregnancy loss due to poor uterine support and suboptimal endometrial environment. Studies show that women with this anomaly have a significantly higher rate of recurrent early miscarriages. Strassmann’s metroplasty aims to improve uterine cavity geometry and reduce the risk of such losses by creating a more favorable environment for fetal development.

**Why Each Wrong Option is Incorrect**
Option A: Infertility is a common concern, but it is not the most specific or primary indication. Many women with bicornuate uterus may be infertile, but the key issue is often early pregnancy loss, not conception failure.
Option B: Menorrhagia is a common symptom, but it is not the main indication for surgery. It may be managed conservatively or with medical therapy.
Option D: Vaginal atresia is a congenital anomaly, but it is rare and not directly linked to bicornuate uterus. It is a separate condition and not a standard indication for Strassmann’s procedure.

**Clinical Pearl / High-Yield Fact**
Recurrent early pregnancy losses (before 12 weeks) are the strongest predictor for surgical intervention in bicornuate uterus. If a woman has two or more early miscarriages, and imaging confirms a bicornuate uterus, metroplasty is considered a viable option to improve pregnancy outcomes.

✓ Correct Answer: C. Repeated early pregnancy losses