Intermediate
Technical
IVT
burr hole
A small circular hole drilled through the skull to access the brain or relieve pressure.
Full Definition
A burr hole is a precisely drilled circular opening in the skull, typically 10-15mm in diameter, created using specialized neurosurgical tools. This minimally invasive access point allows surgeons to insert instruments, drain fluid collections, or relieve intracranial pressure without performing a full craniotomy. Burr holes are commonly used for procedures such as brain biopsies, hematoma evacuation, and placement of intracranial monitoring devices. The procedure requires careful planning to avoid critical brain structures and blood vessels.
Usage
Usage note: Often confused with craniotomy in lay publications; burr holes are much smaller and less invasive.
In Context
- "The surgeon created a burr hole to evacuate the subdural hematoma." — operative report
- "Placement of the burr hole was guided by stereotactic navigation." — procedure note
Also known as
trepanation hole
drill hole
Contrasted with
craniotomy
craniectomy
Don't confuse with
craniotomy
trephination