2023 was a turning point in shunt therapy of IH, when research suggested that lumbar shunts are not more risky than VP shunts. They say also that lumbar shunts might have more benefits than VP shunts. Programmable gravitational valves has become possible to be implanted in lumbar area against a board.

Comparisons of valves has become very important with the simple question: which is better for the IH patient?