PMID: 8610250Dec 1, 1995Paper

Kinematics of the canine lumbar intervertebral joint. An in vivo study before and after adjacent instrumentation

Spine
M J SchendelL J Wallace

Abstract

In vivo, canine lumbar spine intervertebral motion was measured before and after instrumentation of caudal segments. The three-dimensional kinematics of the intervertebral joint were described using helical axes and Fourier series. The in vivo three-dimensional kinematics of the intervertebral joint were measured and described. An animal model where intervertebral motion could be repeatedly changed was developed. The kinematics of intervertebral joints have been described from results of extensive in vitro testing, some limited in vivo testing, and clinically by evaluation of flexion/extension films. In the canine, in vivo intervertebral motion has been described previously, but the method possessed some measurement artifact. In vivo, four canines had motion data collected (L2-L3) while the animals walked on a treadmill. L3 To L7 were instrumented in all of the animals and motion testing was repeated 1 and 12 weeks later. Helical axes of motion were determined for each gait cycle. Fourier series were fit to the motion data, helical axis parameters, and Fourier coefficients were all statistically compared (pre- and postinstrumentation). Vertebral rotations (coronal plane) and excursion of the L2/3 facet increased significantly (...Continue Reading

Citations

Nov 28, 2001·Equine Veterinary Journal. Supplement·K K HausslerJ W Hermanson
Aug 10, 2011·Journal of Biomechanical Engineering·Nicolas V JaumardBeth A Winkelstein
Apr 20, 2000·American Journal of Veterinary Research·M FaberA Barneveld
Jul 5, 2007·Neurosurgical Focus·Paul KhoueirMichael Y Wang
Nov 17, 2012·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·M KornmayerL Brunnberg
Oct 7, 2000·Journal of Dental Research·L M GalloS Palla
Aug 14, 2012·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Hendrik-Jan C KranenburgLeo H Koole

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