From: The risk associated with spinal manipulation: an overview of reviews
Death | Â |
 1 in >3330.000–3,730,000 manipulations |  |
Stroke | Â |
 1 in 20,000–2,000,000 manipulations |  |
Vertebrobasilar accident (VBA) | Â |
 1 in 228,050–1,000,000 manipulations |  |
Cerebrovascular accident (CVA) | Â |
 1 in 228,050– 3,850,000 manipulations |  |
Lumbar disc herniation (LDH) | Â |
 1 in 8,369,129 manipulationsa |  |
Cauda equina syndrome (CES) | Â |
 1 CES in >1,000,000–128,000,000 manipulations |  |
CES or LDH | Â |
 1 in >1,000,000–3,720,000 manipulations |  |
‘Serious adverse events’ |  |
 1 in 1,000,000–250,000,000 manipulations |  |
‘Serious complication’ |  |
 1 in 20,000–2,000,000 manipulations |  |