An analysis of 658 medical records of inpatient treatment from 15 hospitals of St.Petersburg was made using a computer-aided technology of the assessment of medical care quality. It was revealed that a proper quality of medical care in craniocerebral trauma was only in 52.9% cases. Different defects of medical care were noted in the rest of observations. It influenced on the condition of the patients (1.0%), the delivery and assessment of health care (40% and 38%, respectively), health resources (18%), social resources (1.0%). Defects of medical records were indicated in 38% patients. It caused a reduction of medical care. Risks of occurrence of medical care defects are low in children hospitals in the case of combined craniocerebral trauma.