1. Endometrial scratch therapy is a simple procedure done to improve embryo implantation and pregnancy rates in women undergoing ART. It involves gently scratching the endometrial lining using a catheter. 2. The proposed mechanisms by which it works include improving endometrial receptivity through regeneration of the endometrium and increased production of growth factors and cytokines. 3. Several studies have found endometrial scratching increases clinical pregnancy and live birth rates, especially in women with recurrent implantation failure undergoing IVF or IUI. It is a low-cost procedure with minimal risk.