Radiological morphometric analysis of cervicothoracic junction vertebrae pedicles

Area of Science:

• Spine surgery
• Anatomy
• Radiology

Background:

• Transpedicular fixation is a common spinal procedure.
• Individualized anatomical data is crucial for safe and effective fixation.
• The cervicothoracic junction (CTJ) presents unique anatomical challenges.

Purpose of the Study:

• To establish detailed morphometric reference data for the CTJ.
• To evaluate demographic correlations (age, sex, height, BMI) of CTJ parameters.
• To support individualized and safer transpedicular fixation techniques.

Main Methods:

• Retrospective analysis of 100 patients (50 male, 50 female) undergoing cervicothoracic CT.
• Measurement of pedicle width, height, length, axial angle, sagittal angle, and central canal diameter (C7-T4).
• Assessment of vertebral artery entry level and transverse foramen hypoplasia, with correlation to demographic factors.

Main Results:

• Males exhibited significantly larger pedicle dimensions (width, height, length).
• Age and height showed positive correlations with pedicle dimensions and central canal diameter.
• Significant left-right asymmetries and variations in vertebral artery entry points were observed.

Conclusions:

• Level, side, and sex-specific CTJ reference data are established.
• Demographic correlations provide practical guidance for surgical planning.
• This data aids in selecting appropriate screw parameters and trajectories, reducing operative risk.