Abstract. Objective: To determine whether flexion-extension cervical spine radiography (FECSR) is abnormal in children who have sustained blunt cervical spine injury (CSI) when standard cervical spine radiography (SCSR) demonstrates no acute abnormalities. Methods: This was a blinded radiographic review of 129 patients Յ16 years of age evaluated at an academic pediatric trauma center during July 1990-March 1996. All patients had SCSR (anteroposterior/lateral views) and FECSR performed for a trauma-related event within seven days of injury. Results: Of 46 patients without acute abnormalities on SCSR, one patient (with final clinical diagnosis of ''no CSI'') had acute abnormalities on FECSR (95% CI = 0.06% to 11.5%). Of 50 patients with isolated loss of lordosis on SCSR, no patient had acute abnormalities on FECSR (95% CI = 0% to 5.8%). The FECSR review revealed no acute abnormalities in 75 of 83 patients (90.4%) with suspicious findings for CSI viewed on SCSR (95% CI = 81.9% to 95.7%). Complications during FECSR were noted in one patient with transient paresthesias (0.8%) (95% CI = 0.02% to 4.2%). Conclusions: In children who underwent acute radiographic evaluation of blunt cervical spine trauma, FECSR was unlikely to be abnormal when no acute abnormality or isolated loss of lordosis was evident on SCSR. In a subset of patients with suspicious findings for occult CSI on SCSR, FECSR was useful in ruling out ligamentous instability in the acute, posttrauma setting. Key words: child; cervical spine; injury; radiographs; flexion; extension. ACADEMIC EMERGENCY MEDICINE 2001; 8:237-245 F LEXION-extension cervical spine radiography (FECSR) is used in the evaluation of blunt pediatric cervical spine injury (CSI) as an adjunct to standard three-view (i.e., anteroposterior, lateral, and open-mouth odontoid) cervical spine radiography (SCSR), but to the best of our knowledge, its role has not been systematically investigated.Traditional indications for FECSR in children include the evaluation of occult ligamentous injury in patients with suspicious SCSR, 1,2 abnormal physical examination findings despite normal SCSR, 1 and spinal cord injury without radiographic abnormality (SCIWORA).3,4 Flexion views in particular have been recommended in children with C1/C2 injuries to show transverse ligament rupture 2 and hyperflexion injuries to reveal occult posterior ligamentous complex instability. adjunct to SCSR in the acute plain radiographic evaluation of CSI in children who had sustained blunt cervical spine trauma. Our hypothesis was that FECSR is unlikely to be abnormal if SCSR demonstrates no acute abnormalities.
METHODSStudy Design. We conducted a blinded radiographic review of SCSR and FECSR applied to a pediatric population. Pertinent clinical and radiographic information was obtained retrospectively. Institutional review board approval for the study was obtained with waiver of written informed consent.Study Setting and Population. Patients Յ16 years of age who underwent SCSR and FECSR for a trauma-related event within...