Radiographic anatomy features of teenagers’ upper-middle thoracic vertebrae
10.3969/j.issn.2095-4344.2014.09.013
- VernacularTitle:青少年中上胸椎的影像解剖学特点
- Author:
Zhifeng ZHANG
;
Jun SHI
;
Jing WEI
;
Xing WANG
;
Leigang ZHENG
;
Hongjun HUO
;
Zhijun LI
- Publication Type:Journal Article
- Keywords:
thoracic vertebrae;
image processing,computer-assisted;
bone nails;
prostheses and implants
- From:
Chinese Journal of Tissue Engineering Research
2014;(9):1386-1391
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:The conditions of teenager and adult skeletons have great differences. Thus, it is dangerous to place screw on teenagers using the methods for adults.
OBJECTIVE:To observe the anatomical features of teenagers’ upper-middle thoracic vertebra images, and to provide experimental basis for pedicle nailing and pedicle-rib head unit nailing in teenagers’ upper-middle thoracic vertebrae.
METHODS:We chose 30 teenagers (13 to 18 years old) without spine lesions, and then they were scanned (0.625-1.25 mm) from T 1 to T 12 segments using CT. The original data were loaded into a three dimensional software in DICOM format for measuring related indicators. At last, we analyzed the data according to different segments.
RESULTS AND CONCLUSION:The trend between the width of pedicle and pedicle-head unit was similar, showing a“V”shape. The minimum of width was located in the T 4 , and there were significant differences between the corresponding vertebral bodies (P<0.05). The trend between pedicle nail road length and pedicle-rib head unit nail road length was similar, and the trend between them was gradual y increasing. The minimum of length was located in T 1 , and the maximum of length was located at T 10 , and there were significant differences between the corresponding vertebral bodies (P<0.05). The trend between the pedicle transverse angle and pedicle rib-head unit transverse angle was similar. The trend from T1 to T10 was on a decline, and there were significant differences in corresponding vertebrae (P<0.05). The trend of curves between pedicle sagittal angle and pedicle rib-head unit sagittal angle was similar, showing a wavy shape, and there were significant differences in corresponding vertebrae (P<0.05). These results confirmed that the same segmental pedicle rib-head unit can provide a safer nailing place than the pedicle relatively.
