Abstract :
Pedicle has a strong structure in vertebral anatomy and has been extensively used for screw fixation in orthopedic spine surgery. There are challenges associated with transpedicular screw implantation in the Thoracic region. Several studies have described the morphology of the thoracic pedicle using cadaveric and CT scan studies. In this study, we perform a magnetic resonance imaging (MRI)-based Morphometric study of Thoracic vertebral pedicle. A retrospective cohort study of 111 patients who had undergone an MRI of the Spine. A total of 2.448 pedicles from T1-T12 were studied using parameters. Pedicle morphology was described quantitively with the following parameters: Pedicle Height, Pedicle Width, and Pedicle Axis Length. Mean Pedicle Height was the narrowest at Th1 (8.61 ± 1.01mm) and the widest at Th12 (13.06 ± 1.52). The Mean Pedicle Width was the narrowest at Th4 (4.78 ± 0.67) and the widest at Th12 (7.41 ± 0.81). The Mean Pedicle Axis Length was the shortest at Th2 (32.63 ± 3.33) and the longest at Th12 (43.59 ± 3.61). Morphology thoracic pedicles in the North Sumatera population have smaller pedicles than other Asian populations. We suggest that caution needs to be taken during spine instrumentation.
