Anesth Pain Med.
2021 Apr;16(2):177-183. 10.17085/apm.20093.
Real world adverse events of interspinous spacers using Manufacturer and User Facility Device Experience data
- Affiliations
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- 1Department of Anesthesiology, Yale New Haven Hospital, New Haven, CT, USA
- KMID: 2515544
- DOI: http://doi.org/10.17085/apm.20093
Abstract
- Background
Lumbar spinal stenosis is a condition of progressive neurogenic claudication that can be managed with lumbar decompression surgery or less invasive interspinous process devices after failed conservative therapy. Popular interspinous process spacers include X-Stop, Vertiflex and Coflex, with X-Stop being taken off market due to its adverse events profile.
Methods
A disproportionality analysis was conducted to determine whether a statistically significant signal exists in the three interspinous spacers and the reported adverse events using the Manufacturer and User Facility Device Experience (MAUDE) database maintained by the US Food and Drug Administration.
Results
Statistically significant signals were found with each of the three interspinous spacer devices (Coflex, Vertiflex, and X-Stop) and each of the following adverse events: fracture, migration, and pain/worsening symptoms.
Conclusions
Further studies such as randomized controlled trials are needed to validate the findings.
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