Malrotation is a rare aetiological factor of intestinal occlusion in adult. We report our experience of 16 cases collected from 1976 to 1991. The incidence is about 0.2-0.5% with two peaks, at 25 and 55 years respectively. Mean age is of 41 years. The symptoms were occlusion in more than 90%. A contrast enema was performed in acute as well as in chronic situations. The surgical treatment whatever it is, is the treatment of choice but has to be put in balance with age.