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KMID : 0607119960030010101
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Inha Medical Journal
1996 Volume.3 No. 1 p.101 ~ p.104
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Measurements of Normal Interfacet Distance on Dynamic Lumbar Twisted CT Scan
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Abstract
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Torsion injury occurs when a disc is subject to excessive torsional stress. When range of motion is over 3 degrees, zygapophyseal joint capsule may suffer tears or fracture-avulsion ' or eventually circumferential tear of the annulus fibrosus may
follow. A difficulty concerning torsion injury on zygapophyseal joint has been the lack of means for its diagnosis. The author measured normal interfacet distances on dynamic twisted CT scan to help diagnose the torsion injury and instability
following
as a standard data. The interfacet distances(mean±S.D) were 2.5±0.4mm on L4/5 level, 2.4±0.4mm on L3/4 level, 2.1±0.7mm on L2/3 level, and 1.8±0.5mm on L1/2 and L5/S1 levels, respectively. These standard data can be used in conjunction with
other
methods in diagnosing the torsion injury.
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KEYWORD
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