腰椎小关节不对称并不会加速小关节的退变。
Lumbar facet joint tropism does not accelerate degeneration of the facet joints.
作者信息
Grogan J, Nowicki B H, Schmidt T A, Haughton V M
机构信息
Department of Radiology, Medical College of Wisconsin, Froedtert Hospital, Milwaukee 53226, USA.
出版信息
AJNR Am J Neuroradiol. 1997 Aug;18(7):1325-9.
PURPOSE
To study the relationship of lumbar facet joint tropism to degeneration of the cartilage and subcortical bone in the facet joints and the effect of tropism in intervertebral disk degeneration.
METHODS
The orientation of 104 cadaveric lumbar facet joints with respect to sagittal plane was measured on CT scans, and the joints were classified as having no tropism, mild tropism, or severe tropism. On MR images, the severity of cartilage degeneration and bony sclerosis was measured. The correlation between tropism and degeneration was calculated, as was the relationship among age, spinal level, and degeneration.
RESULTS
We identified four spinal levels with severe tropism, six with moderate tropism, and 94 without tropism. Cartilage degeneration was not significantly more severe in the joints with tropism than in the joints without. Sclerosis was slightly greater in the joints with tropism than in the joints without it. Sclerosis and cartilage degeneration were significantly related to age and spinal level.
CONCLUSION
Age, spinal level, and overall facet joint angle are more important factors in facet joint degeneration than is tropism.
目的
研究腰椎小关节的关节面取向与小关节软骨及皮质下骨退变的关系，以及关节面取向在椎间盘退变中的作用。
方法
在CT扫描上测量104个尸体腰椎小关节相对于矢状面的方向，并将关节分为无关节面取向、轻度关节面取向或重度关节面取向。在磁共振成像（MR）图像上，测量软骨退变和骨质硬化的严重程度。计算关节面取向与退变之间的相关性，以及年龄、脊柱节段和退变之间的关系。
结果
我们确定了4个重度关节面取向的脊柱节段、6个中度关节面取向的节段和94个无关节面取向的节段。有关节面取向的关节软骨退变并不比无关节面取向的关节明显更严重。有关节面取向的关节骨质硬化比无关节面取向的关节略严重。骨质硬化和软骨退变与年龄和脊柱节段显著相关。
结论
在小关节退变中，年龄、脊柱节段和小关节的整体角度比关节面取向更重要。
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