Pedicle morphology of the thoracic spine in preadolescent idiopathic scoliosis: magnetic resonance supported analysis |
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Authors: | Hüseyin Çatan Levent Buluç Yonca An?k Erhan Ayy?ld?z Ahmet Y?lmaz ?arlak |
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Institution: | (1) Department of Orthopaedics and Traumatology, Adıyaman State Hospital, Adıyaman, Turkey;(2) School of Medicine, Department of Orthopaedics and Traumatology, Kocaeli University, Umuttepe, 41380 Kocaeli, Turkey;(3) School of Medicine, Department of Radiology, Kocaeli University, Kocaeli, Turkey |
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Abstract: | Although several studies have been reported on the adult vertebral pedicle morphology, little is known about immature thoracic
pedicles in patients with idiopathic scoliosis. A total of 310 pedicles (155 vertebrae) from T1 to T12 in 10–14 years age
group were analyzed with the use of magnetic resonance imaging and digital measurement program in 13 patients with right-sided
thoracic idiopathic scoliosis. Each pedicle was measured in the axial and sagittal planes including transverse and sagittal
pedicle width and angles, chord length, interpedicular distance and epidural space width on convex and concave sides of the
curve. The smallest transverse pedicle widths were in the periapical region and the largest were in the caudal region. No
statistically significant difference in transverse pedicle widths was detected between the convex and concave sides. The transverse
pedicle angle measured 15.56° at T1 and decreased to 6.32° at T12. Chord length increased gradually from the cephalad part
of the thoracic spine to the caudad part as the shortest length was seen at T1 convex level with a mean of 30.45 mm and the
largest length was seen at T12 concave level with a mean of 41.73 mm. The width of epidural space on the concave side was
significantly smaller than that on the convex side in most levels of the curve. Based on the anatomic measurements, it may
be reasonable to consider thoracic pedicle screws in preadolescent idiopathic scoliosis. |
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Keywords: | Thoracic pedicle morphology Preadolescent idiopathic scoliosis Immature (pediatric) spine Pedicle screw Magnetic resonance imaging |
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