Vertebroplasty and kyphoplasty are associated with an increased risk of secondary vertebral compression fractures: a population-based cohort study
Department of Quantitative Health Sciences
Aged; Alabama; Cohort Studies; Female; Fractures, Compression; Humans; Kyphosis; Lumbar Vertebrae; Male; Middle Aged; Retrospective Studies; Risk Factors; Spinal Fractures; Thoracic Vertebrae; Treatment Outcome; Vertebroplasty
Bioinformatics | Biostatistics | Epidemiology | Health Services Research
To better understand the risk of secondary vertebral compression fracture (VCF) following a vertebroplasty or kyphoplasty, we compared patients treated with those procedures to patients with a previous VCF. The risk of subsequent fracture was significantly greater among treatment patients, especially within 90 days of the procedure. INTRODUCTION: Predominantly uncontrolled studies suggest a greater risk of subsequent vertebral compression fractures (VCFs) associated with vertebroplasty/kyphoplasty. To further understand this risk, we conducted a population-based retrospective cohort study using data from a large regional health insurer. METHODS: Administrative claims procedure codes were used to identify patients receiving either a vertebroplasty or kyphoplasty (treatment group) and a comparison group of patients with a primary diagnosis of VCF who did not receive treatment during the same time period. The main outcomes of interest, validated by two independent medical record reviewers, were any new VCFs within (1) 90 days, (2) 360 days, and (3) at adjacent vertebral levels. Multivariable logistic regression examined the association of vertebroplasty/kyphoplasty with new VCFs. RESULTS: Among 48 treatment (51% vertebroplasty, 49% kyphoplasty) and 164 comparison patients, treated patients had a significantly greater risk of secondary VCFs than comparison patients for fractures within 90 days of the procedure or comparison group time point [adjusted odds ratio (OR) = 6.8; 95% confidence interval (CI) 1.7-26.9] and within 360 days (adjusted OR = 2.9; 95% CI 1.1-7.9). CONCLUSIONS: Patients who had undergone vertebroplasty/kyphoplasty had a greater risk of new VCFs compared to patients with prior VCFs who did not undergo either procedure.
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Citation: Osteoporos Int. 2009 May;20(5):819-26. Epub 2008 Sep 17. Link to article on publisher's site
Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
Mudano, Amy S.; Bian, John; Cope, J. U.; Curtis, Jeffrey R.; Gross, T. P.; Allison, Jeroan J.; Kim, Y.; Briggs, D.; Elkins-Melton, Mary; Xi, J.; and Saag, Kenneth G., "Vertebroplasty and kyphoplasty are associated with an increased risk of secondary vertebral compression fractures: a population-based cohort study" (2008). Quantitative Health Sciences Publications and Presentations. 838.