Posttraumatic cerebral contusions, lacerations and hematomas in the past could often only be suspected by clinical symptomatology and be visualized by angiography in a restricted manner, but they are now diag- nosed with precision through CT and MRI; they remain in the limelight in our daily management of severe head injuries. Stalhammar's longlasting research in biomechanics is he re condensed in a concise review of the current knowledge in this field, thus providing the basis for our understanding of the parenchymal cerebral posttraumatic lesions. The neuropathological investigations and...