The revolution was not in the tools. Access to information transformed our judgment.
None of these six technologies, on its own, changed the history of neurosurgery. And yet we operate better today than we did ten years ago. What changed was access to knowledge: learning from those with the most experience, following international congresses without travelling, watching surgery in real time, reading complete multicentre studies, reviewing the original evidence before adopting a technique. The tools widened what we can do; information transformed how we decide. All six articles cite their sources.
What comes next is not a better version of these tools: it is a change in kind. That is in The future.
Neuronavigation and tractography
The navigation system tells you where the tumour is to within millimetres. The problem is that the brain, the moment the dura is opened, stops being where the image says it is.
Read the article →5-ALA fluorescence
The patient drinks a compound and the tumour glows pink under violet light. Almost everything that glows is tumour. The problem is everything that does not glow.
Read the article →The 4K-3D exoscope
It replaces the microscope's eyepieces with a screen the whole theatre can see. It improves posture, matches operating times and changes no patient outcome. That last point is not a criticism: it is the question nobody asked.
Read the article →Intraoperative imaging
An MRI inside the operating room confirms whether tumour remains. It doubles the rate of complete resections, adds an hour and a half to the procedure, and in the largest trial it nearly doubled intracranial infection. And in more than half of cases, the surgeon does not go back in.
Read the article →Neurophysiological monitoring
Electrodes that watch the spinal cord and the nerves while you operate, and warn before a manoeuvre damages them. It detects poorly — four in ten deficits escape it — and rules out very well. And there is no randomised trial evaluating it, nor will there be.
Read the article →Artificial intelligence
Link by link, this is what artificial intelligence actually does today along a neurosurgical patient's path. The pattern repeats: where it measures well, it measures speed. And the two most honest systems here are the ones that abstain.
Read the article →