Abstract：Objective To evaluate the radiological parameters of the anatomical morphology of atlantoaxial lateral mass articular surface and support the design of clinical atlantoaxial lateral mass fusion cage.Methods A retrospective study. From January 2019 to June 2020, 100 healthy adults who underwent cervical CT examination in Ningbo No. 6 Hospital were selected retrospectively, including 57 males and 43 females, aged 26-61 years with an average age of (40.9±6.4) years. Philips 64-slice multislice spiral CT was used to scan C1-C7 and reconstruct 2D images. The curvature, length, and height of intervertebral space were measured and compared in the sagittal and coronal planes. The shape of the atlantoaxial lateral mass articular surface and the distribution of the vertex position of the concave or convex vertices were observed.Results No significant differences were observed in the curvature, length, and height of the intervertebral space between the left and right sides in the sagittal and coronal planes of atlantoaxial lateral mass (all P values＞0.05). The curvatures of the sagittal atlantoaxial lateral mass articular surface were 171.16°±6.21° and 166.37°±8.50°. The curvatures of the coronal were 159.83°±8.22° and 167.22°±10.40°. The lengths of the sagittal atlantoaxial lateral mass articular surface were (16.38±1.61) and (16.59±1.63) mm. The lengths of the coronal were (16.75±1.71) and (17.14±1.69) mm. The anterior, middle, and posterior intervertebral space heights of the sagittal atlantoaxial lateral mass articular were (2.87±0.80), (2.22±0.63), and (3.25±1.00) mm, respectively. The inside, middle, and outside intervertebral space heights of the coronal were (1.94±0.74), (3.39±0.57), and (1.64±0.62) mm, respectively. The sagittal articular surface shape of atlantoaxial lateral mass was mostly double convex and convex flat. The coronal was mostly double concave and concave flat. In the sagittal and coronal plane, the vertex of the atlantoaxial lateral mass were more in 1/3 of the center.Conclusions The curvature of the atlantoaxial lateral mass surface and the position of the vertex should be considered to optimize the shape of the cage.
顾勇杰, 张吉辉, 于亮, 许晶飞, 马维虎, 徐荣明, 贺石生, 赵刘军. 寰枢椎侧块关节面形态的影像解剖学研究[J]. 中华解剖与临床杂志, 2021, 26(3): 253-258.
Gu Yongjie, Zhang Jihui, Yu Liang, Xu Jingfei, Ma Weihu, Xu Rongming, He Shisheng, Zhao Liujun. Radiological study on the anatomical morphology of atlantoaxial lateral mass articular surface. Chinese Journal of Anatomy and Clinics, 2021, 26(3): 253-258.
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