简介:Inpatientswhohavesustainedtraumaticbraininjurywithassociatedextremityfracture,thereisoftenaclinicalperceptionthattherateofnewboneformationaroundthefracturesiteincreases.Anovergrowthofcallusisobservedandectopicossificationevenoccursinthemuscle,butthemechanismremainsunclear.Whetherthisrapidly-formednewboneisfracturecallusoravariantofheterotopicossification,acommoncomplicationoftraumaticbrain