Cervical Artery Dissection
In this meta-analysis, the authors (who are neurosurgeons) attempt to determine if there is a causal relationship between chiropractic care (manipulation) and cervical artery dissection (CAD). Carotid artery dissection has an estimate of 2.5-3 per 100,000 and vertebral artery dissection is estimated to occur at 1-1.5 per 100,000. As you know, CAD is rare, but there have been numerous articles that have created the impression of an association between spinal manipulation and CAD.
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