Comparison of porcine and human lumbar spine flexion mechanics*

J. P. Dickey; G. A. Dumas; D. A. Bednar

doi:10.1055/s-0038-1632753

Veterinary and Comparative Orthopaedics and Traumatology, Inhaltsverzeichnis

Vet Comp Orthop Traumatol 2003; 16(01): 44-49
DOI: 10.1055/s-0038-1632753

Original Research

Schattauer GmbH

Comparison of porcine and human lumbar spine flexion mechanics*

J. P. Dickey

¹Department of Human Biology and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada

,

G. A. Dumas

²Department of Mechanical Engineering, Queen’s University, Kingston, Ontario, Canada

,

D. A. Bednar

³Division of Orthopaedic Surgery, McMaster University, Hamilton, Ontario, Canada

› Institutsangaben

Abstract

Summary

Animal models have been proposed as an alternative to human spinal specimens for in vitro mechanical testing due to the limited availability, poor reproducibility, high cost, and potential health risk associated with human specimens. The purpose of this study was to directly compare the flexion biomechanics of porcine and human lumbar spines. We determined the range of motion, laxity zone and the stiffness under pure-moment flexion loading. The porcine and human specimens showed qualitative similarities in mechanical behaviour. However the porcine specimens demonstrated a number of quantitative differences including a less-stiff, more extensive, low-stiffness region around the neutral position and a larger flexion range of motion. The results suggest that the porcine lumbar spine may be a potential model for the human lumbar spine for certain in vitro mechanical tests including comparisons between spinal fixation constructs.

Keywords

Biomechanics - animal model - porcine - human - comparative mechanics - spine - lumbar spine

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Referenzen

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