Biomechanical study of lumbar pedicle screws : Does convergence affect axial pullout strength ?

We tested the hypothesis that two pedicle screws placed in convergence offer more resistance to axial pullout than do two pedicle screws placed in parallel. Eight fresh cadaveric lumbar spines, L2-L5, were harvested. Individual vertebra were then paired for testing. Into each L2 and L3 vertebra, a p...

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Veröffentlicht in:	Journal of spinal disorders 1998-06, Vol.11 (3), p.215-220
Hauptverfasser:	BARBER, J. W, BODEN, S. D, GANEY, T, HUTTON, W. C
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Bone Screws Cadaver Glass Humans Lumbar Vertebrae - physiology Lumbar Vertebrae - surgery Materials Testing Medical sciences Models, Anatomic Orthopedic surgery Polyurethanes Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Tensile Strength
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