Robotic pyeloplasty is a minimally invasive surgical procedure used to treat ureteropelvic junction (UPJ) obstruction, a condition where there is a blockage or narrowing at the point where the ureter (the tube that connects the kidney to the bladder) meets the renal pelvis (the upper part of the kidney). This blockage can lead to urine flow obstruction, causing urine to back up into the kidney, potentially leading to pain, infection, and kidney damage.