Functional recovery following resection of large Tarlov cyst malformation: a multicentre longitudinal cohort study.

Objective: The authors report their experience with 44 consecutive patients who underwent cyst fenestration and wall repair or cerebrospinal fluid communication closure for the management of sacral Tarlov cysts.

Methods: The procedure was performed on 32 women and 12 men with a mean age of 42 years. Clinical complaints in all patients included lumbar-sacral aching, sphincter dysfunction perineal pain, and sexual intercourse pain.

Flow ventricular catheters for shunted hydrocephalus: initial clinical results.

Background: The non-homogenous flow of the cerebrospinal fluid within the ventricular catheter is one of the causative factors in shunt obstructions during the treatment of hydrocephalus. Previously, we studied the flow in ventricular catheters under the steady and pulsatile boundary conditions by means of computational fluid dynamics (CFD) in three-dimensional paradigms. Subsequently, several catheter designs with homogeneous flow patterns were developed out of which one prototype was chosen after a validation study.