1-6 岁儿童枢椎经椎弓根螺钉内固定的可行性.

李 琨; 高尔科; 熊 峰; 王 星; 武丹琪; 李志军; 张少杰; 刘亚楠; 朵 岚; 李子瑜

BACKGROUND: Internal screw fixation is often required for the treatment of specific axial pedicle fractures in the occipito-atlanto-axial complex region and is widely used in adults. However, there are no anatomic data on the development of the axial pedicle with common internal fixation in children aged 1 to 6 years. OBJECTIVE: To investigate the feasibility of 3.50 mm perpedicle screw internal fixation of axial vertebrae in children aged 1 to 6 years. METHODS: Totally 45 children aged 1 to 6 years were selected and divided into three groups: 1-year-old group, 3-year-old group, 5-6-year-old group, with 15 cases in each group. The original cervical CT data were obtained. The width of the upper, middle and lower edges of the vertebral pedicle, the height and length of the vertebral pedicle, the inclination angle and the upclination angle of the screw were measured after three-dimensnioal reconstruction. In each case, the related index parameters of bilateral pedicle were measured, and each parameter index was measured three times, and the average value was taken. RESULTS AND CONCLUSION: (1) All the indexes of axial pedicle showed an increasing trend with age, except the upper inclination and inner inclination. (2) The width of the upper edge of the vertebral pedicle, the width of the middle edge of the vertebral pedicle and the width of the lower edge of the vertebral pedicle were significantly different among the same age groups. (3) The main limiting factors of axial pedicle screw insertion and stability were the median edge width and length of the vertebral pedicle. The median edge width of the vertebral pedicle was (4.26±0.68) mm in 1-year-old group, (4.92±0.83) mm in 3-yearold group, and (6.26±1.26) mm in 5-6-year-old group. The pedicle length was (12.38±2.10) mm in 1-year-old group, (21.00±5.39) mm in 3-year-old group, and (24.62±1.11) mm in 5-6-year-old group. (4) These results confirm the feasibility of inserting 3.50 mm screws in the axial pedicle of children aged 1-6 years. The screw placement methods should be different in different age groups.

AGE groups; SCREWS; VERTEBRAE; EDGES (Geometry); ADULTS; ANGLES; AGE

Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu, 2022, Vol 26, Issue 11, p1383

2095-4344

Academic Journal

10.12307/2022.433