Endoneurial Fluid Dynamics

Continuity Between CSF and Endoneurial Fluid The extracellular space within a nerve fascicle is about 20-25 of the total intrafascicular volume. The endoneurial hydrostatic pressure (EHP) exerted by this fluid is about 2-3 mmHg. In terms of fluid dynamics, the endoneurial contents consist of a noncom-pressible aqueous solution, and a somewhat compressible cellular content constrained by an elastic sheath, the perineurium. Hence, the EHP will be determined by the volume of the endoneurial...