Abstract
BackgroundMorphometric measurement of the sacrum is crucial due to its active involvement in the instrumentation for lumbar pathologies. From screw placement to stabilization procedures for the spine, the sacrum remains a site of surgical importance. Thus, the purpose of this study was to generate baseline data by comparing two techniques, namely, osteometry in dry bones and CT scan imaging.MethodologyIn this study, 30 dry, fully ossified, disarticulated sacra were studied for osteometry, and 60 CT scan reports of patients with lumbar pathologies were retrospectively evaluated. In both cases, similar parameters were measured. The mean values were determined, the two methods were compared, and statistical analysis was performed.ResultsAmong the 30 dry bone samples, 33.3% (10 out of 30) were males, while 55% of the CT scan group were males. Correlation between the different measurements in the CT scan group suggested that the vertebral body maximum width of S1 had a significant positive correlation with the vertebral body height of S1, sacral height, sacral breadth, transverse diameter of auricular surface, and vertical diameter of auricular surface. Statistically significant higher values (P < 0.001) were observed for the vertebral body mid diameter of S1, vertebral body height of S1, pedicle width, and pedicle depth measurements in the dry bone group compared to the CT scan group.ConclusionsThe efficiency of anaesthetic blocks can be increased if the parameters are evaluated beforehand. Moreover, sexual dimorphism of the bone can account for the varied results of the parameters, indicating the necessity to conduct gender-based studies in a wider population.
Highlights
Around 400-250 BC, Hippocrates in his collection termed “On the Articulations” first mentioned the bone called the sacrum
Correlation between the different measurements in the CT scan group suggested that the vertebral body maximum width of S1 had a significant positive correlation with the vertebral body height of S1, sacral height, sacral breadth, transverse diameter of auricular surface, and vertical diameter of auricular surface
Significant higher values (P < 0.001) were observed for the vertebral body mid diameter of S1, vertebral body height of S1, pedicle width, and pedicle depth measurements in the dry bone group compared to the CT scan group
Summary
Around 400-250 BC, Hippocrates in his collection termed “On the Articulations” first mentioned the bone called the sacrum. The fusion of five sacral vertebrae forms the large triangular bone sacrum. It forms the posterosuperior wall of the pelvic cavity and is sandwiched between the two hip bones. Between the base and apex, there are dorsal, pelvic, and lateral surfaces of the sacrum and a sacral canal. The dorsal surface is convex while the pelvic surface is concave. This bone forms a link between the spine and the iliac bones and plays an important role in the stability of the hip. From screw placement to stabilization procedures for the spine, the sacrum remains a site of surgical importance. The purpose of this study was to generate baseline data by comparing two techniques, namely, osteometry in dry bones and CT scan imaging
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