摘要
用CT图像观测152例经CT,MRI或手术证实的L4-5及L5-S1椎间盘退变或正常的患者之相应小关节面形态及小关节面水平夹角(TIFA)。结果显示:L4-5椎间盘退变率及其小关节面呈弧形改变率均高于L5-S1单元;L5-S1椎间盘退变率与L4-5TIFA呈正相关,与L5-S1TIFA呈负相关,与L5-S1和L4-5TIFA差值呈特殊相关。提示下位腰椎间盘退变与小关节面形态及方向变化有关。
To assess the possible correlation between the shape and the direction of the small articular surface in the lower lumbar vertebrae and the degeneration of the intervertebral disc, we investigated with computed tomography (CT) and evaluated with statistics the small articular surface and the transverse interface joint angle (TIFA) of the L 4-5 and the L 5 S 1 in 152 cases who had normal or degenerative discs verified through CT, MRI or operation. The small articular surface was found arc in 69.1% of the L 4-5 and in 23.0% of the L 5 S 1. The TIFA of the L 4-5 was less than that of the L 5 S 1. There was no correlation between the ratio of degeneration of the intervertebral disc at the L 4-5 and the TIFA of the L 4-5 and the L 5 S 1, but the ratio of degeneration of the intervertebral disc at the L 5 S 1 had postive correlation with the TIFA of the L 4-5 , negative correlation with the TIFA of the L 5 S 1, and particular correlation with the TIFA of the L 5 S 1 and L 4-5 . These results suggest that the shape and direction of the lower lumbar facet joint are related to the lumbar degeneration of intervertebral disc and the causes of degeneration at the L 4-5 disc differ from those at the L 5 S 1 disc in biomechanics.
出处
《湖南医科大学学报》
CSCD
1997年第4期327-329,共3页
Bulletin of Hunan Medical University
关键词
椎间盘
退行发育
关节
形态发生
intervertebral discs
anaplasia
joints
morphogenesis