Background and Objective The anatomy of the craniovertebral junction (CVJ) varies considerably across populations, yet comprehensive Turkish‐specific morphometric data remain limited. We aim to establish normative CVJ measurements in Turkish males and females using computed tomography (CT). Study Design Retrospective morphological study. Materials and Methods A retrospective analysis of CT images from 500 patients (250 females and 250 males, aged 25–40 years) was conducted between January and December 2022. CVJ measurements were obtained, and sex‐related differences were assessed. Results The mean atlantodental interval was 1.45 ± 0.01 mm, posterior atlantodental interval 19.35 ± 0.09 mm, McGregor line 79.78 ± 0.21 mm, Chamberlain line 76.95 ± 1.21 mm, McRae line 36.27 ± 0.12 mm, Wachenheim clivus‐canal angle 154.65 ± 0.45 ° , sphenoid angle 121.15 ± 0.39 ° (no sex difference, p = 0.083), Welcher basal angle 130.02 ± 0.28 ° (higher in females, p < 0.001), basion‐axial interval 7.13 ± 0.07 mm (higher in males, p = 0.011), basion‐dental interval 5.32 ± 0.06 mm, and craniocervical tilt angle 123.94 ± 0.44 ° (higher in males, p < 0.001). Conclusion This study provides a comprehensive CT‐based analysis of CVJ measurements in Turkish adults, establishes normative morphometric values, and shows that most parameters exhibit sex‐based differences. These population‐ and sex‐specific reference data may be crucial for improving the accuracy of clinical assessments and surgical planning.
Fidan et al. (Thu,) studied this question.