Endometrium-free closure technique for hysterotomy incision at cesarean delivery.

Cesarean deliveries are associated with uterine scar defects that significantly impact women's health and future pregnancy outcomes. The methods used for hysterotomy closure following cesarean delivery have undergone significant evolution. Commonly used techniques, which are relatively rapid and maintain hemostasis, include the endometrium in a single-layer or "bulk" closure. Such endometrium-inclusive cesarean closure has been linked to an increased risk of scar defects and long-term complications. However, the available data show no difference in outcomes related to cesarean closure technique, leading to widespread adoption of single-layer closure. The debate over the best method for uterine closure as well as the etiology of scar defects remains unresolved. We present the endometrium-free closure technique, an approach that requires in-depth knowledge of uterine anatomy, including the ability to distinguish the 3 layers of the uterine wall, and employs reapproximation of these layers. A 30-year retrospective study of consecutive cesarean deliveries using this closure method reports a reduction in abnormal implantation in subsequent pregnancies. Key findings from sonohysterographic studies demonstrate a clinically significant reduction in the development and size of scar defects when the endometrium is excluded from the closure, in women with one or multiple cesarean deliveries. While formal changes in surgical guidelines may require further randomized trials, we believe that this technique has the potential to reduce adverse events and provide long-term benefits for women's reproductive health.