1 / 17

Using FEA to Study the Injury of Cervical Spinal Cord

Using FEA to Study the Injury of Cervical Spinal Cord. Reporter: YY Chien Adviser: SW Yang. Motivation. Motorcycle and Auto are popular transports in Taiwan. The accident of motor crash often induces the spinal cord injury.

william-parks
Download Presentation

Using FEA to Study the Injury of Cervical Spinal Cord

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Using FEA to Study the Injury of Cervical Spinal Cord • Reporter: YY Chien • Adviser: SW Yang

  2. Motivation • Motorcycle and Auto are popular transports in Taiwan. • The accident of motor crash often induces the spinal cord injury.

  3. Michael J. Epidemiology of Traumatic Spinal Cord Injury. In: Kirshblum S, Campagnolo DI, Delisa JA, editors. Spinal Cord Medicine. USA: Philadelphia; 2002. p.74

  4. Purpose • Using FEM to investigate cervical spinal cord injury during impact.

  5. Material and Method • To construct the cervical spinal cord model. • To analyze the stress and strain during impact.

  6. Exist Model • This model from C1 to T1 is obtained from KH Yang.

  7. Spinal Cord Geometric • The model of cervical spine is used 29 year-old male with a height of 1.74 m and a weight of 75 kg. Yang KH, Zhu F, Luan F, Zhao L and Begeman PC. Development of a Finite Element Model of the Human Neck. SAE, 1998 November 2-4, p-337.

  8. Ishikawa M, Matsumoto M, Fujimura Y, Chiba K, Toyama Y. Changes of cervical spinal cord and cervical spinal canal with age in asymptomatic subjects. Spinal cord 2003 42, 159-163

  9. Spinal Cord Model

  10. Drop Test • Degree: 0 , without helmet • Velocity: 15 m/s (54 km/hr)

  11. Max Von Mises Stress: 11.34 MPa t=0.0074 s element: 10890929 • Max Shear Stress :5.865 MPa t=0.0073 s element: 10890929

  12. Element 10890929 is located at the C4.

  13. 1st principle strain:

  14. Future Work • When human experiences a frontal impact, it may cause the spinal canal narrowing. • The cervical spine initially develops an S-shape curvature and then progresses to a C-shape curvature during whiplash. • Ivancic PC, Panjabi MM, Tominaga Y, et al. Spinal canal narrowing during simulated frontal impact. Eur Spine J (2006) 15: 891-901 Panjabi MM, Pearson AM, Ito S, Ivancic PC, Wang JL. Cervical spine curvature during simulated whipash. Clinical Biomechanics 19(2004)1-9

  15. Future work • To stimulate whiplash situation. • To consider the effects of neck muscles.

  16. Flow Chart construct the cervical spinal cord model Drop test Frontal Impact Lateral Impact Rear Impact

  17. Reference • Michael J. Epidemiology of Traumatic Spinal Cord Injury. In: Kirshblum S, Campagnolo DI, Delisa JA, editors. Spinal Cord Medicine. USA: Philadelphia; 2002. p.74 • Yang KH, Zhu F, Luan F, Zhao L and Begeman PC. Development of a Finite Element Model of the Human Neck. SAE, 1998 November 2-4, p-337. • Ishikawa M, Matsumoto M, Fujimura Y, Chiba K, Toyama Y. Changes of cervical spinal cord and cervical spinal canal with age in asymptomatic subjects. Spinal cord 2003 42, 159-163 • Foreman ST, Fractures and Dislocations of the Cervical Spine. In: Froeman SM, Croft AC editors. Whiplash Injuries. USA: Baltimore; 1995. p228

More Related