Traction as a cause of gallbladder avulsion.

Following isolated blunt trauma to the abdomen, a 25-year-old man developed peritonitis. Laparotomy revealed a band between the transverse colon and gallbladder, with partial avulsion of the latter. Avulsion of the gallbladder is a rare injury and, to the best of our knowledge traction has not been described as a mechanism of injury.