Measurement of three-dimensional parameters of lower cervical facet joints and design of transarticular facet screw guide
- VernacularTitle:下颈椎关节突三维参数测量与关节突螺钉导向器的设计
- Author:
Zhongwei LI
1
;
Fuchao CHU
;
Chunjiu GAO
;
Feng YUAN
Author Information
1. 徐州医科大学附属医院脊柱外科,江苏省徐州市 221006
- Keywords:
three-dimensional reconstruction of cervical vertebrae;
cervical facet joint inclination angle;
lower cervical transarticular facet screw
- From:
Chinese Journal of Tissue Engineering Research
2024;28(21):3339-3343
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:In recent years,cervical facet joints have been paid more and more attention to the pathogenesis and surgical treatment of cervical spondylosis,but there are few anatomical studies on adult lower cervical facet joints. OBJECTIVE:To measure three-dimensional parameters of the lower cervical facet to provide a basis for the design of the lower cervical transarticular facet screw guide. METHODS:From June 2021 to June 2022,100 cases receiving cervical spine CT examination in the Affiliated Hospital of Xuzhou Medical University were selected,with 50 males and 50 females,aged 20-50 years.After screening,each image showed no cervical spinal stenosis,cervical disc herniation,obvious bone hyperplasia,infection or tumor.The sagittal inclination angle of each segment of the cervical spine facet joint and the angle between the lower cervical spine facet joint surface and the transarticular facet joint screw at the C3-7 levels were measured after 3D reconstruction.According to the measurement results of statistical analysis,a lower cervical transarticular facet screw guide was designed using CAD software. RESULTS AND CONCLUSION:The inclination angle of the cervical facet joint surface on the sagittal plane was distributed in a U-shaped shape centered on C5,and the magnitude relationship was C7>C6>C3>C4>C5.The relationship between transarticular facet screw angles on the sagittal plane was:C6/7>C5/6>C4/5>C3/4,where the angle of C3/4,C4/5 and C5/6 was close to 90°,and the angle of C6/7 exceeded 100°.By measuring the sagittal inclination angle of the cervical facet joint and the angle of the transarticular facet screw,this study designed a guide that was perpendicular to the lower cervical facet joint surface in the sagittal plane.
