Dr. Benjamin Elder talks more about something we definitely don't hear enough about: hydrocephalus in adults. Shunt treatments for hydrocephalus are notorious for failing or requiring revision surgeries.
Dr. Elder goes into a lot of detail about different types of shunts, other treatment options for hydrocephalus (and similar disorders of CSF flow like syringomyelia or idiopathic intracranial hypertension, also sometimes called pseudotumor cerebri).