On the stability analysis of the human spine

M. El-Rich, A. Shirazi-Adl

Research output: Contribution to journalConference articlepeer-review


The stability analysis of human spine under compression loads was discussed. A novel kinematics based method was applied to compute muscle forces and internal loads in standing postures under gravity. The stability of the system under given loads and prescribed postures was examined using linear buckling analysis and nonlinear analysis. It was found that larger muscle forces and greater co-activity significantly increased the system stability whereas they increased the internal compression/shear loads. It was also found that the error in calculation of buckling load diminishes as the applied loads and deformed configurations approach the critical point.

Original languageBritish English
Pages (from-to)385-386
Number of pages2
JournalAmerican Society of Mechanical Engineers, Bioengineering Division (Publication) BED
StatePublished - 2003
Event2003 ASME International Mechanical Engineering Congress - Washington, DC., United States
Duration: 15 Nov 200321 Nov 2003


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