How do you determine which site to utilize for ventricular peritoneal shunt placement - frontal or posterior?

Depends on the individual, anatomy, size, prior surgeries, etc. Preference is frontal for several reasons: with growth, the relative length of the catheter to overall head growth is less than with a parieto-occipital catheter and less likely to end up in the choroid plexus. Should septostomy be need...