Difference of cervical neutral position sagittal alignment between protract chin position and natural position cervical lateral X-ray of patients with cervical degenerative disease
HAN Xiao
TIAN Wei
MA Chi
LYU Yanwei
CHENG Xiaoguang
WANG Yusheng
Abstract：Objective To discuss the difference value of cervical neutral position sagittal alignment between protract chin position and natural position cervical lateral X-ray of the patients with cervical degenerative disease.Methods Fifty-nine patients with cervical degenerative disease were included in this study.Every patient took cervical lateral X-ray with protract chin position and natural position.The O-C2 angle and C2-7 angle were measured and compared on these two kinds of X-rays.Results The C2-7 angle on the protract chin position X-ray was-15.3-50.2° (20.0°±13.4°) which had positive correlation (r=0.890, P=0.000) and significant difference with C2-7 angle on the natural position X-ray-16.1°-38.2° (11.1°±11.8°)(P<0.01).The difference value of C2-7 angle between the two positions was 0.8°-26.6° (8.9°±6.1°).The O-C2 angle on the protract chin position X-ray was 14.8°-46.8° (31.8°±6.0°) which had positive correlation (r=0.873, P=0.000) and significant difference with O-C2 angle on the natural position X-ray 11.1°-40.9° (27.0°±6.6°) (P<0.01).The difference value of O-C2 angle between the two positions was-2.4°-12.4° (4.8°±3.3°).Conclusion For the patients with cervical degenerative disease, natural position should be used for taking cervical lateral X-ray.
Keywords：cervical degenerative diseaseX-Raycervical neutral position sagittal alignmentprotract chin positionnatural position
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 20-22 )