Computed Tomographic Evaluation of Pedicle Dimension and Lumbar Spinal Canal

Abstract

Aim: Pedicular screws have known, well-recognized complications; however, the surgeon should be aware of the morphometry of the pedicles, as well as the anatomy of the surrounding neural structures to minimize these risks. This study examined the physical characteristics of lumbar pedicles and this study is unique for this purpose. Materials and Methods: Twenty-five vertebrae were selected in either sex, 18 years or older, and E-film computer software was used to measure the different diameters of pedicle. Results: The L(5) pedicle was the widest (16.8 mm), whereas L(1) was the narrowest (8.25 mm). This figure was 8.82, 10.48, and 12.86 for L(2), L(3), and L(4), respectively. The longitudinal depth of the pedicle was 47.98, 48.68, 50.42, 48.32, and 47.8 for L(1), L(2), L(3), L(4), and L(5), respectively. Statistically significant differences were found between some dimensions detected in our study and similar studies. Conclusions: The shape and diameter of the pedicles are different in different races. Some differences were found in our study with regard to pedicle dimensions.