A detailed and validated 3D FE model of human cervical spine (Sadegh et al. 2000) was altered to simulate partial fusion. Five single level partially fused new models, one at each disc level, were used to study the change in stresses in adjacent levels. Two cases of partial fusion, 80% and 60% were considered. The fused models were loaded with a 50 N compressive pre-load and with a 1.5 Nm moment in flexion, extension, lateral bending and axial rotation. The previously obtained results of the unfused model (Tchako et al. 2002) and of the fused models were used to study the change in stresses in adjacent levels. The results indicate that, in general, there are stress changes as high as 94%, depending on the loading mode and location, in adjacent discs after discectomy and fusion. However, the difference between the stress change of 80% and 60% of partial fusion is insignificant.
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ASME 2003 International Mechanical Engineering Congress and Exposition
November 15–21, 2003
Washington, DC, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
0-7918-3710-6
PROCEEDINGS PAPER
Stress Changes in Intervertebral Discs of the Cervical Spine After Partial Fusion
Abraham Tchako,
Abraham Tchako
City College of the City University of New York, New York, NY
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Ali M. Sadegh
Ali M. Sadegh
City College of the City University of New York, New York, NY
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Abraham Tchako
City College of the City University of New York, New York, NY
Ali M. Sadegh
City College of the City University of New York, New York, NY
Paper No:
IMECE2003-42977, pp. 377-378; 2 pages
Published Online:
May 12, 2008
Citation
Tchako, A, & Sadegh, AM. "Stress Changes in Intervertebral Discs of the Cervical Spine After Partial Fusion." Proceedings of the ASME 2003 International Mechanical Engineering Congress and Exposition. Advances in Bioengineering. Washington, DC, USA. November 15–21, 2003. pp. 377-378. ASME. https://doi.org/10.1115/IMECE2003-42977
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