Dynamic Chiropractic 2001 Nov; 19(23)
Part I: Cranial Hydrodynamics and the Sutures The human brain has two drainage routes: one is through the transverse/sigmoid sinus system and into the internal jugular veins; the other is through the occipital marginal sinus system and into the vertebral venous plexus (VVP) inside the spinal canal. The internal jugular veins primarily drain the brain in the recumbent position. The VVP on the other hand is preferentially used to drain the brain in the upright position. Some authors refer to this system as the accessory drainage system. This article covers four parts: 1) sutures of the neurocranium and the role of the craniosacral primary respiratory rhythm (CSPR) in cranial hydrodynamics; 2) upright posture and the accessory drainage system and their role in cranial hydrodynamics; 3) how less effective designs, aging and injury of the craniocervical spine and accessory drainage system can lead to cranial hydrodynamic failure and chronic NPH; 4) how chronic NPH can lead to the type of pathology seen in Alzheimer’s disease.
Free Full Text