Morphometric Study of the Atlas Vertebra in Western India Region

Background: The first cervical vertebra (atlas) plays a crucial role in supporting the skull and facilitating head movements. Its unique anatomical configuration and proximity to vital neurovascular structures necessitate precise morphometric understanding for clinical applications.

Objective: To measure and analyze specific morphometric parameters of the atlas vertebra and assess their clinical significance in surgical planning and radiological interpretation.

Materials and Methods: The study was conducted on 60 dry adult human atlas vertebrae. Standard osteometric parameters were measured using a digital Vernier caliper with accuracy of ±0.01 mm. Parameters included vertebral canal dimensions, articular facet measurements, and foramen transversarium distances. Data were statistically analyzed using mean ± standard deviation.

Results: Key measurements included anteroposterior vertebral canal diameter (28.83±3.24 mm), transverse vertebral canal diameter (24.17±3.43 mm), and outer distance of foramen transversarium (57.58±3.80 mm). The study revealed consistent patterns with minor regional variations compared to other Indian populations.

Conclusion: Understanding these morphometric features is vital for safe surgical interventions in the craniovertebral region. The data provide valuable reference values for implant design and surgical planning in the Indian population.