The anatomical measurement of adolescent thoracic pedicle on CT 3-D reconstruction
WANG Zhen-Feng, LI Zhi-Jun, LI Xiao-He, CAI Yong-Qiang, LI Ting-Bin, WANG Xing
Chinese Journal of Clinical Anatomy ›› 2011, Vol. 29 ›› Issue (2) : 193-196.
The anatomical measurement of adolescent thoracic pedicle on CT 3-D reconstruction
Objective To provide the anatomical data for teenagers thoracic pedicle fixation. Methods Using multidetector-row CT for scanning the thoracic spine of 46 volunteer normal teenagers（14~17-year-old）; after the reconstruction, measurement of height and width of pedicle cancellous bone and pedicle cancellous bone was made, observation of bone structure of the pedicle was carried out. Results The width of the pedicle assumed a trend of being large at the sides and small at the middle, T4 minimum (3.85±0.77) mm, T1 maximum ( 8.12±139) mm; the height of the pedicle assumed an gradually increasing wavy curve, T3 (10.93 ±0.88) mm, T12 maximum (15.68±1.25) mm; Pedicle cancellous bone wide first decreases, T11 maximum (5.24±1.3) mm; Pedicle cancellous bone high T4 minimum(5.74±2.4) mm, T11 maximum (13.18±2.3) mm. Conclusion It is the cancellous bone that really decides the diameter of the screw; during the placement of the screw, its direction and site should be guided by the imaging materials.
Thoracic pedicle / Spiral CT / The reconstruction of three-dimensional measurement / Teenagers
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