Bilateral fracture of the pars interarticularis or pedicles of C2 leading to instability between vertebral body and posterior elements
Target Population
Patients with unstable C2 pedicle fractures, including complex fractures with odontoid involvement
Care Setting
Surgical spine fixation in operating room with neuronavigation support
Key Highlights
Neuronavigation enhances precision of C2 pedicle screw placement, reducing neurological and vascular risks.
Judet technique uses minimally invasive posterior transpedicular cancellous lag screws preserving motion and minimizing soft tissue damage.
Preoperative CT and intraoperative 3D imaging confirm screw trajectory and fracture reduction.
Guideline-Based Recommendations
Diagnosis
Use preoperative cervical spine CT scans to identify fracture type and anatomical variations, especially vertebral artery position.
Classify fractures as typical Hangman’s or atypical bilateral pedicle fractures to guide treatment.
Management
For unstable fractures with displacement or spinal cord risk, perform surgical fixation using posterior transpedicular screw fixation (Judet technique).
Employ neuronavigation systems (e.g., Brainlab LoopX or BodyTom CT) for planning and intraoperative guidance.
Position patient prone with radiolucent head holder and use minimally invasive midline posterior approach.
Monitoring & Follow-up
Intraoperative 3D CT imaging to confirm screw placement and fracture reduction.
Validate navigation accuracy using anatomical landmarks before screw insertion.
Risks
Risk of vertebral artery injury, especially with high-riding vertebral artery variants (~8.2% injury rate).
Potential neurological injury if screw trajectory is inaccurate.
Bleeding and muscular damage minimized by minimally invasive approach.
Patient & Prescribing Data
Patients with unstable or complex C2 pedicle fractures requiring surgical stabilization
Neuronavigation-assisted Judet screw fixation offers safe, accurate stabilization with preservation of C1-C2 motion and reduced complication rates.
Clinical Best Practices
Thorough preoperative imaging to assess fracture and vertebral artery anatomy.
Secure navigation reference frame to C2 spinous process for accurate registration.
Plan screw trajectory virtually with 3D navigation software prior to drilling.
Use navigated tubular guides and screwdrivers to maintain planned trajectory.
Confirm screw placement intraoperatively with 3D CT before closure.
Maintain anti-Trendelenburg position to reduce venous bleeding.
