OBJECTIVE: To evaluate the efficiency of intraoperative and postoperative radiographs of the dorsal pedicle screw placement and its relationship with computed tomography (CT). METHODS: Thirty six patients with adolescent idiopathic scoliosis (AIS) were evaluated. Three different observers classified the placement of screws through radiographs. The responses were compared with CT scans. RESULTS: A total of 280 pedicle screws were evaluated. The interobserver assessment was 0.56 (moderate match). The assessment of intraobserver matching was 0.79 (good match). No vascular or neurological lesions have been observed. CONCLUSIONS: According to the results of intra and inter-observers, the reproducibility of postoperative radiograph is not very effective to diagnose malposition of spinal pedicle screws. Computed tomography showed very useful to determine the position of the spinal pedicle screws.
Scoliosis; Adolescent; Bone Screws; Tomography
