**Core Concept**
A bicornuate uterus is a congenital anomaly where the uterus is divided into two horns, often leading to structural distortion and impaired uterine cavity space. This anatomical defect can compromise embryo implantation and fetal development, increasing the risk of pregnancy loss.

**Why the Correct Answer is Right**
Recurrent abortions (spontaneous miscarriages) are the most significant clinical indication for surgical correction of a bicornuate uterus. The abnormal uterine shape disrupts the optimal environment for implantation and early fetal development due to inadequate space and poor cavity conformity. Surgical repair (e.g., metroplasty) aims to reshape the uterine cavity and improve pregnancy outcomes. While infertility, dysmenorrhoea, and menorrhagia may occur, they are less directly linked to the need for surgical intervention compared to recurrent abortion.

**Why Each Wrong Option is Incorrect**
Option A: Infertility is common in bicornuate uterus but is often secondary to other factors; it does not necessitate surgical intervention as strongly as recurrent abortion.
Option B: Dysmenorrhoea is a symptom of uterine malformation but is not a primary indication for surgery.
Option C: Menorrhagia may occur but is usually managed conservatively and is not a key driver for surgical correction.

**Clinical Pearl / High-Yield Fact**
In women with a bicornuate uterus, recurrent abortion is the strongest predictor for surgical intervention. A history of ≥3 spontaneous losses warrants evaluation of uterine anatomy, with surgical correction considered when the malformation is severe and associated with pregnancy failure.

✓ Correct Answer: D. Recurrent aboions