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. 2007 Aug;16(8):1203-8.
doi: 10.1007/s00586-006-0281-y. Epub 2007 Jan 3.

Pedicle morphology of the thoracic spine in preadolescent idiopathic scoliosis: magnetic resonance supported analysis

Hüseyin Catan  1 , Levent Buluç, Yonca Anik, Erhan Ayyildiz, Ahmet Yilmaz Sarlak
Affiliations

Pedicle morphology of the thoracic spine in preadolescent idiopathic scoliosis: magnetic resonance supported analysis

Hüseyin Catan et al. Eur Spine J. 2007 Aug.

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 degrees at T1 and decreased to 6.32 degrees 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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Figures

Fig. 1
Fig. 1
Transaxial illustration of a thoracic vertebra, showing the chord length (CD), the transverse pedicle width (AB), the transverse pedicle angle (F), and the interpedicular distance (BE)
Fig. 2
Fig. 2
Illustration of a thoracic vertebra with the measurements of epidural space on the concave (aa′) and convex (bb′) sides of the curve
Fig. 3
Fig. 3
Sagittal illustration of a thoracic vertebra demonstrating the sagittal pedicle width (AB) and the sagittal pedicle angle (C)
See this image and copyright information in PMC

References

    1. Brown C, Lenke LG, Bridwell KH, Geideman WM, Hasan SA, Blanke K. Complications of pediatric thoracolumbar pedicle screws. Spine. 1998;23:1566–1571. doi: 10.1097/00007632-199807150-00012. - DOI - PubMed
    1. Delorme S, Labelle H, Aubin CE, Guise JA, Rivard CH, Poitras B, Dansereau J. A three-dimensional radiographic comparison of Cotrel–Dubousset and Colorado instrumentations for the correction of idiopathic scoliosis. Spine. 2000;25:205–210. doi: 10.1097/00007632-200001150-00010. - DOI - PubMed
    1. Dickson RA, Lawton JO, Archer IA, Butt WP. The pathogenesis of idiopathic scoliosis: biplanar spinal asymmetry. J Bone Joint Surg Br. 1987;66:8–15. - PubMed
    1. Ebraheim NA, Xu R, Ahmad M, Yeasting RA. Projection of the thoracic pedicle and its morphometric analysis. Spine. 1997;22:233–238. doi: 10.1097/00007632-199702010-00001. - DOI - PubMed
    1. Ferree BA. Morphometric characteristics of pedicles of the immature spine. Spine. 1992;17:887–891. doi: 10.1097/00007632-199208000-00005. - DOI - PubMed