Long-term Behavior of Single-level Thoracic and Lumbar Fractures Treated With Pedicle Screw Fixation.

Clinical Spine Surgery : a Spine Publication
Cláudia RodriguesRicardo Rodrigues-Pinto

Abstract

This was a retrospective cohort study to objectively analyze the behavior of single-level thoracic (T), thoracolumbar (TL), and lumbar (L) fractures treated with posterior instrumentation alone and to understand which factors influence the ability to restore and maintain normal spinal alignment. Posterior screw fixation of dorsal and lumbar spine fractures allows fracture stabilization, correction of kyphotic deformity and restoration of vertebral height. The load-sharing classification identifies fractures that may need anterior instrumentation. Patients submitted to pedicle screw fixation of single-level T, TL, and L fractures were retrospectively analyzed. Data on patient demographics, neurological injury [American Spinal Injury Association (ASIA) score], and comorbidities were collected. Fractures were classified according to their anatomic region (T, TL, or L) and using the AO Spine and the load-sharing classifications. Local kyphosis angle, Cobb angle (CA), and changes in anterior vertebral height (AVH) were measured, to quantify intraoperative correction and loss of correction at 6 weeks and at last follow-up. A multivariate analysis was performed to identify the factors influencing the intraoperative correction and the ...Continue Reading

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