Abstract: Introduction: A cadaveric study for comparison of dorsal pedicular diameters in Indian males and females. Morphometric study of pedicles of spine of dorsal region is thus relevant and critical for proper placement of the transpedicular screw to avoid inadvertent penetration of pedicular wall.
Material and Methods: It’s a observational study done at a tertiary health care centre in which 30 cadavers were studied using posterior midline approach. Direct measurements were taken on the vertebra with using a sliding vernier caliper
Results: Thirty cadavers were studied out of which 23 were males and seven wee females. I studied vertical as well as horizontal diameter at the middle of pedicle and calculate mean of these two and did comparison between Indian males and females. When compared with males of the same height, females have thinner pedicles. This means the average diameter of the pedicular screws which is safe for the males at the particular level cannot be considered safe for females of the same height and age.
Conclusion: On the basis of this study we have idea about average screw size for male and female at particular level to avoid untoward complication of current pedicular system. In males average diameter goes on increasing from D1to D12 with highest at D12 -5.6mm while lowest at D2 and D3 i.e. 4.5 mm. In females we found average diameter goes on increasing from D1to D12 with highest diameter at D9 i.e, 5.2mm and lowest at D2 i.e. 4.2 mm. As compared to the males females have thinner pedicles.
