利用头颈有限元模型研究散打运动中颈椎韧带损伤的风险

发布时间：2018-07-28 11:11

【摘要】：目的研究颈椎有限元模型在预测散打中颈椎韧带损伤风险的作用,比较摆拳及直拳击打后颈椎韧带受力的差异。方法基于CT图像利用图像处理软件Mimics进行头颈骨骼部分的三维重建,并导入Hyper Mesh建立一个有效的头颈有限元模型,在对该模型的力矩-运动范围及击打后头部加速度进行验证后,比较不同击打力量(2.60、3.30、4.35 kN)下直拳及摆拳击打对颈椎韧带受力大小、分布的差异。结果所建颈部有限元模型具有良好的生物有效性,其预测的受击打后头部线性加速度及旋转加速度与参考文献相符。在摆拳模拟中,韧带最大受力部位位于环枕韧带,当击打力从2.60 kN增加至4.35 kN时,摆拳击打后韧带受力最大值分别为207、265、263 N;而在直拳击打后韧带受力最大部位位于环枢韧带,其受力最大值分别为96.8、91.4、101.4 N。在同样的击打力量下,摆拳所致的颈椎韧带受力较直拳更大。结论与直拳相比,散打摆拳更容易引起颈椎韧带损伤;头颈有限元模型可用于散打所致颈部损伤的生物力学机制研究,为散打的训练及损伤预防提供更精确的参考。
[Abstract]:Objective to study the role of cervical finite element model in predicting the risk of cervical ligament injury in Sanda. Methods based on CT images, the head and neck bones were reconstructed by image processing software Mimics, and an effective finite element model of head and neck was established by introducing Hyper Mesh. After verifying the torque-motion range of the model and the acceleration of the head after hitting, the difference of the size and distribution of the force between straight boxing and pendulum boxing on the cervical ligaments under different strike forces (2.60 ~ 3.30 ~ 4.35 KN) was compared. Results the neck finite element model has good bioavailability, and the predicted linear acceleration and rotation acceleration of the head are in accordance with the references. In the simulation of swing fist, the maximum force of ligaments was located in the annular occipital ligament. When the beating force increased from 2.60 KN to 4.35 KN, the maximum force of posterior ligament in swing boxing was 207265263 Ns, while in the direct boxing, the maximum force of posterior ligament was located in the armature ligament. The maximum value of the stress is 91.4101.4 N. Under the same strike force, the cervical ligaments caused by swing fist are more forced than straight fist. Conclusion compared with direct boxing, Sanda swing is more likely to cause cervical ligament injury, and the finite element model of head and neck can be used to study the biomechanical mechanism of Sanda induced cervical injury, which provides a more accurate reference for training and injury prevention of Sanda.
【作者单位】：中南大学湘雅三医院放射科;湖南师范大学体育教育系;Laboratory
【分类号】：R686.5

【相似文献】