MORPHOMETRIC ANALYSIS OF SUB-AXIAL CERVICAL VERTEBRAE IN ADULT KASHMIRI POPULATION
Main Article Content
Keywords
Cervical pedicle morphometry, Kashmiri population, CT-based analysis
Abstract
Cervical pedicle screw (CPS) fixation offers superior biomechanical stability but carries high risk of neurovascular injury due to ethnic variations in pedicle morphology. No prior data exist for the Kashmiri population.
Methods: A prospective CT-based study of 50 adult Kashmiris (25 males, 25 females) undergoing cervical CT for unrelated indications. Exclusion criteria included cervical pathology. Using 1 mm reconstructed images, bilateral measurements (C3–C7) of pedicle width (PW), height (PH), length (PL), axis length (PAL), transverse (PTA), and sagittal angulation (PSA) were performed by two observers. Data were analyzed using STATA 14.0.
Results: Mean PW increased cranio-caudally (4.68 ± 0.49 mm at C3 to 6.06 ± 0.87 mm at C7), with males significantly larger (p<0.05). C3 females showed a 32% prevalence of PW <4.5 mm. PH exceeded PW at all levels. PTA decreased from 44.94° to 38.51°, while PSA remained cephalad (15.45° to 5.17°). No left-right differences were found.
Conclusion: Kashmiri sub-axial pedicles are smaller than Western and most Asian cohorts, with unique persistent cephalad PSA. CPS is feasible in >90% of cases except C3 females. Level-specific trajectory adjustment and smaller implants are recommended.
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Dr Asif Bashir Thoker
Senior Resident Orthopaedics SKIMS MCH Bemina Srinagar)
Dr Shakir Ahmad Bhat
PG scholar Orthopaedics SKIMS MCH Bemina Srinagar)
Dr Jeetendra Kumar
PG scholar Orthopaedics SKIMS MCH Bemina Srinagar)
Dr Muzaffar Ahmad Malla
Senior Resident Orthopaedics SKIMS MCH Bemina Srinagar)
Dr Arvinder Singh Teeth
SKIMS MCH)
