Novel composite lumbar cages were designed by F.E.M., manufactured and implanted in porcine spine at the L4-L5 lumbar zone of five pigs (large white-duroc race of 5055 Kg by weight and 1.92.1 months old). Each composite cage was prepared by filament winding technology by using PEI (PolyEtherImmide GE Polymerland ULTEM 1000/1000) as matrix and Carbon fibre (Torayca T400-B 6000-50B) as reinforcement with a winding angle of 45A1 degree. Mechanical properties were investigated according to ASTM standard on composite material, novel composite cage, titanium cage and the natural disc. The device was coated with PEI HA (hydroxyapatite) solution in order to improve the bone interaction. The behaviour of the composite cage was compared to titanium lumbar cages (SOFAMOR Danek) through biomechanical and histological tests.
Novel composite intervertebral disc cage for spine fusion.
R De Santis;L Ambrosio;
2005
Abstract
Novel composite lumbar cages were designed by F.E.M., manufactured and implanted in porcine spine at the L4-L5 lumbar zone of five pigs (large white-duroc race of 5055 Kg by weight and 1.92.1 months old). Each composite cage was prepared by filament winding technology by using PEI (PolyEtherImmide GE Polymerland ULTEM 1000/1000) as matrix and Carbon fibre (Torayca T400-B 6000-50B) as reinforcement with a winding angle of 45A1 degree. Mechanical properties were investigated according to ASTM standard on composite material, novel composite cage, titanium cage and the natural disc. The device was coated with PEI HA (hydroxyapatite) solution in order to improve the bone interaction. The behaviour of the composite cage was compared to titanium lumbar cages (SOFAMOR Danek) through biomechanical and histological tests.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
