【摘要】 为探讨不同角度下牵引对颈椎椎间关节的作用 ,采用建立完整的颈段脊柱三维空间有限元模型 ,对前屈、后伸 0～ 30°共 11种不同牵引体位下的椎间关节应力分布及其运动情况进行分析。结果显示正常颈椎椎间关节所受应力主要为垂直轴上的压应力 ,力值从上到下逐渐增大 ,尤以C5～ 6、C6～ 7为主 ,在牵引作用下 ,前屈位可将其转变为拉压力 ,后伸位仍为压应力 ,二者都随角度的加大而逐渐加大。表明颈椎牵引早期应在前屈或后伸 0～ 10°下 ,后期应结合临床、影像学诊断选择合适的角度。更多还原

【Abstract】 Objective: To explore the influence of different traction angels on cervical intervertebral joints. Methods: The stress distribution and its activity in different 11 postures from 30° anterior curvature to 30° posterior curvature were analyzed by three-dimensional finite unit model of complete cervical spine. Results: The stress of normal cervical intervertebral joints originated mainly from compressive stress in vertical axis, and the values of stress were increased from the top to the below, which were obvious especially in C 5～C 6, C 6～C 7. The compressive stress was turned into drawing stress in the posture of anterior curvature, while it was not changed in the posture of posterior curvature, the values of stress in both postures were increased with the augment of their angels. Conclusion: The cervical traction in early stage should be in the postures from 10° anterior curvature to 10° posterior curvature, the angels of traction in late stage should be chosen in combination with clinical and radiographic diagnosis.更多还原