The risk of stroke after percutaneous vertebroplasty for osteoporosis: A population-based cohort study

Ching Lan Wu, Jau Ching Wu, Wen Cheng Huang, Hung Ta H. Wu, Hong Jen Chiou, Laura Liu, Yu Chun Chen*, Tzeng Ji Chen, Henrich Cheng, Cheng Yen Chang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

2 Scopus citations

Abstract

Purpose: To investigate the incidence and risk of stroke after percutaneous vertebroplasty in patients with osteoporosis. Methods: A group of 334 patients with osteoporosis, and who underwent percutaneous vertebroplasty during the study period, was compared to 1,655 age-, sex- and propensity score-matched patients who did not undergo vertebroplasty. All demographic covariates and co-morbidities were deliberately matched between the two groups to avoid selection bias. Every subject was followed-up for up to five years for stroke. Adjustments using a Cox regression model and Kaplan-Meier analyses were conducted. Results: A total of 1,989 osteoporotic patients were followed up for 3,760.13 person-years. Overall, the incidence rates of any stroke, hemorrhagic stroke and ischemic stroke were 22.6, 4.2 and 19.6 per 1,000 person-years, respectively. Patients who underwent vertebroplasty were not more likely to have any stroke (crude hazard ratio = 1.13, p = 0.693), hemorrhagic stroke (HR = 2.21, p = 0.170), or ischemic stroke (HR = 0.96, p = 0.90). After adjusting for demographics, co-morbidities and medications, the vertebroplasty group had no significant difference with the comparison group in terms of any, hemorrhagic and ischemic strokes (adjusted HR = 1.22, 3.17, and 0.96, p = 0.518, 0.055, and 0.91, respectively). Conclusions: Osteoporotic patients who undergo percutaneous vertebroplasty are not at higher risk of any stroke in the next five years after the procedure.

Original languageEnglish
Article numbere31405
JournalPLoS ONE
Volume7
Issue number1
DOIs
StatePublished - 31 01 2012

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