OBJECTIVE: To make a clinical and radiological comparison of long term results of the conservative treatment of thoracolumbar burst fractures, in patients with and without fracture in the posterior vertebral arch, in order to assess possible differences in the evolution of the two types of lesion. METHODS: A retrospective analysis was made of the clinical records and imaging exams (X-rays CT scans) of 25 patients without neurological deficit with thoracolumbar burst fractures treated without surgery, and a comparison was made of the degree of progression of kyphosis between the cases with fracture of the lamina (Group 1) and those without posterior fracture (Group 2). 13 of these patients were submitted to comparative evaluation using the visual analogical scale of pain (VAS), the Denis pain and work scale, and the life quality questionnaire SF-36. RESULTS: 25 patients were analyzed (36 % in group A and 74% in group B) with mean follow-up of 111.64 months. There was no difference in the degree of kyphosis progression during follow-up between groups A and B (5.22º x 4.63º - p = 0.650). Of the 13 patients functionally analyzed, 46% were from group A and 54% from group B. In this assessment, despite the worse VAS (1.83 x 5.00 - p = 0.015) in patients without posterior fracture (Group B), there was no difference in the Denis scale (4.00 x 5.71 - p > 0.05 ) and SF-36 (98.60 x 90.83 - p = 0.168) between the two groups. CONCLUSION: Taken separately, the posterior arch fracture does not seem to be an indicator of instability or of poor prognosis in thoracolumbar burst fractures.
Spinal fractures; Spinal fractures; Spinal canal; Tomography, X-ray computed; Treatment outcome; Retrospective studies
