The term volvulus has its roots from medieval Latin volvere; which means 'to roll'. A volvulus is a subtype of malrotation, in which a loop of bowel is twisted about a focal point along the mesentery attached to the intestinal tract, that may result in a bowel obstruction.A volvulus is a twisting or axial rotation of a portion of bowel about its mesentery.igmoid volvulus is the most-common form of volvulus of the gastrointestinal tract. and is responsible for 8% of all intestinal obstructions. Sigmoid volvulus is particularly common in elderly persons and constipated patients. Patients experience abdominal pain, distension, and absolute constipation.