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The 'armed concrete' approach: stent-screw-assisted internal fixation (SAIF) reconstructs and internally fixates the most severe osteoporotic vertebral fractures
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The 'armed concrete' approach: stent-screw-assisted internal fixation (SAIF) reconstructs and internally fixates the most severe osteoporotic vertebral fractures
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The 'armed concrete' approach: stent-screw-assisted internal fixation (SAIF) reconstructs and internally fixates the most severe osteoporotic vertebral fractures
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Journal Article
The 'armed concrete' approach: stent-screw-assisted internal fixation (SAIF) reconstructs and internally fixates the most severe osteoporotic vertebral fractures
2021
Overview
BackgroundThe treatment of severe osteoporotic vertebral compression fractures (VCFs) with middle-column (MC) involvement, high fragmentation, large cleft and/or pedicular fracture is challenging. Minimally invasive 'stent-screw-assisted internal fixation' (SAIF) can reduce the fracture, reconstruct the vertebral body (VB) and fix it to the posterior elements.ObjectiveTo assess feasibility, safety, technical and clinical outcome of the SAIF technique in patients with severe osteoporotic VCFs.Methods80 treated vertebrae were analyzed retrospectively. Severe VCFs were characterized by advanced collapse (Genant grade 3), a high degree of osseous fragmentation (McCormack grade 2 and 3), burst morphology with MC injury, pediculo-somatic junction fracture, and/or large osteonecrotic cleft. VB reconstruction was evaluated on postprocedure radiographs and CT scans by two independent raters. Clinical and radiological follow-ups were performed at 1 and 6 months.ResultsSAIF was performed at 28 thoracic and 52 lumbar levels in 73 patients. One transient neurological complication occurred. VB reconstruction was satisfactory in 98.8% of levels (inter-rater reliability 96%, κ=1). Follow-up at 1 month was available for 78/80 levels and at 6 months or later (range 6–24, mean 7.9 months) for 73/80 levels. Significant improvement in the Visual Analog Scale score was noted at 1 and 6 months after treatment (p<0.05). Patients reported global clinical benefit during follow-up (Patient’s Global Impression of Change Scale 5.6±0.9 at 1 month and 6.1±0.9 at 6 months). Fourteen new painful VCFs occurred at different levels in 11 patients during follow-up, treated with vertebral augmentation or SAIF. Target-level stability was maintained in all cases.ConclusionsSAIF is a minimally invasive, safe, and effective treatment for patients with severe osteoporotic VCFs with MC involvement.
Publisher
BMJ Publishing Group Ltd,BMJ Publishing Group LTD
Subject
/ Aged
/ Cement
/ Female
/ Fracture Fixation, Internal - instrumentation
/ Fracture Fixation, Internal - methods
/ Fractures, Compression - diagnostic imaging
/ Fractures, Compression - surgery
/ Humans
/ Lumbar Vertebrae - diagnostic imaging
/ Male
/ Osteoporotic Fractures - diagnostic imaging
/ Osteoporotic Fractures - surgery
/ Pain
/ Patients
/ Reconstructive Surgical Procedures - instrumentation
/ Reconstructive Surgical Procedures - methods
/ Spinal Fractures - diagnostic imaging
/ Spine
/ stent
/ Stents
/ Thoracic Vertebrae - diagnostic imaging
