Clinical results and complications after sacropelvic fixation for lumbar spinal deformity

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Sacroiliac fixation using iliac screws for highly unstable lumbar spine with an improved fusion rate and clinical results have been reported. On the other hand, there is a possibility of clinical problems related to iliac fixation, including vertebral fracture at upper level and infection. So, the purpose of the current study was to investigate clinical results and complications after sacroiliac fixation using iliac screws.Twelve patients were evaluated. Diagnosis was degenerative scoliosis in 5 patients, failed back syndrome in 4 patients, destructive spondyloarthropathy in 2 patients, and Charcot spine in 1 patient. All patients underwent posterolateral fusion surgery using lumbar, S1 and iliac screws. We evaluated the pain scores, bone union, and complications by X-ray imaging and computed tomography during 2 years after surgery. Pain scores significantly improved after surgery. All patients showed bone union at final follow up. Deep infection within 2 weeks after surgery was seen in 2 patients with diabetes mellitus. Compression fracture at upper level was seen in 2 patients 1 year after surgery.Fusion rate and clinical results were excellent 2 years after surgery, however, rate of complications was high. We should take into consideration of complications to perform sacroiliac fixation using iliac screws for highly unstable lumbar spine.

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