A movement restriction composition for use in a method of treatment of refluxdisease treatment by surgery, the movement restriction composition comprising 50% - 100% silicone or 50% - 100% polyurethane. A coronal plane of the patient divides the esophagus of the patient in an anterior half and a posterior half. The treatment by surgery comprises dissecting an area of the patient's stomach, affixing the stomach fundus wall to the lower part of the patient's esophagus by providing sutures or staples, creating a pouch in the stomach fundus wall, and placing and in-vaginating the movement restriction composition in the pouch by providing sutures or staples to the stomach fundus wall. The center of gravity of the movement restriction composition can be positioned dorsal to the coronal plane for preventing the cardia from sliding through the patient's diaphragm opening into the patient's thorax.