stereotactic frame
Pronunciation: ster-ee-oh-TAK-tik
A rigid head fixation device that provides a three-dimensional coordinate system for precise localization during neurosurgical procedures.
Full Definition
A stereotactic frame is a specialized medical device that attaches to the patient's skull to provide a stable, three-dimensional coordinate reference system for neurosurgical procedures. The frame consists of a rigid ring or arc system that is secured to the skull using pins or screws, creating an immobilized reference point for precise spatial navigation. This technology enables surgeons to accurately target specific brain locations for procedures such as deep brain stimulation electrode placement, stereotactic biopsies, and functional neurosurgery. Modern systems may use frame-based or frameless (image-guided) approaches, with traditional frames offering submillimeter accuracy. The coordinate system typically uses Cartesian (x, y, z) coordinates to define target locations relative to anatomical landmarks.
Usage
Usage note: Distinguish between frame-based and frameless stereotactic systems in documentation.
In Context
- "The stereotactic frame was applied under local anesthesia prior to DBS electrode placement." — Operative procedure note
- "Frame-based stereotaxy provided submillimeter accuracy for the brainstem biopsy." — Surgical technique report