In vivo analysis of canine intervertebral and facet motion

Using an instrumented spatial linkage, a method for measuring intervertebral motion in vivo was developed and used on six dogs. The segmental motion was recorded as the animals were exercised in routine functions. The standing posture was found to be a repeatable position. During walking, the averag...

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Bibliographic Details
Published in:Spine (Philadelphia, Pa. 1976) Pa. 1976), 1992-10, Vol.17 (10), p.1180-1186
Main Authors: WOOD, K. B, SCHENDEL, M. J, PASHMAN, R. S, BUTTERMANN, G. R, LEWIS, J. L, OGILVIE, J. W, BRADFORD, D. S
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Biomechanical Phenomena
Bone Nails
Dogs
Fundamental and applied biological sciences. Psychology
Locomotion - physiology
Lumbar Vertebrae - physiology
Movement - physiology
Physical Conditioning, Animal
Skeleton and joints
Vertebrates: osteoarticular system, musculoskeletal system
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Summary:Using an instrumented spatial linkage, a method for measuring intervertebral motion in vivo was developed and used on six dogs. The segmental motion was recorded as the animals were exercised in routine functions. The standing posture was found to be a repeatable position. During walking, the average excursion between opposing facets was 3.4 +/- 1.3 mm, as the L2-L3 motion segment moved into 2.3 degrees of kyphosis with respect to the standing position. This method has the ability of measuring facet motion (+/- 0.7 mm), vertebral body motion (+/- 0.5 mm), and vertebral body rotations (+/- 0.6 degrees) with suitable accuracy such that it is a useful tool in documenting the in vivo response of a motion segment to surgical procedures.
ISSN:0362-2436
1528-1159
DOI:10.1097/00007632-199210000-00009