KINEMATICS OF THE CERVICAL-SPINE CANAL - CHANGES WITH SAGITTAL PLANE LOADS

被引：53

作者：

CHEN, IH ^{[1
]}

VASAVADA, A ^{[1
]}

PANJABI, MM ^{[1
]}

机构：

[1] VET GEN HOSP,INST NEUROL,DIV NEUROSURG,TAIPEI,TAIWAN

来源：

JOURNAL OF SPINAL DISORDERS | 1994年 / 7卷 / 02期

关键词：

DISK BULGE; LIGAMENTUM-FLAVUM BULGE; LOAD-DISPLACEMENT CURVES; SAGITTAL DIAMETER; CANAL KINEMATICS;

D O I：

10.1097/00002517-199407020-00001

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

Spondylotic myelopathy is a result of decreased spinal canal space due to degeneration. The space also may change with physiological movements. The knowledge of the normal physiological changes is necessary for a better understanding of the clinical symptoms. Using a novel technique, we measured the changes in disk bulge, ligamentum flavum bulge, and anteroposterior canal diameter in response to tension-compression forces (up to 40 N each) and combined loading: 2 Nm of flexion or extension moment combined with 20 N compression force in five human cadaveric lower cervical spine specimens (C4-C7). From tension to compression, the average disk bulge changed 1.13 mm or 10.1% of the original canal diameter. The ligamentum flavum bulge changed 0.73 mm or 6.5% of the canal diameter. From flexion to extension the average disk bulb changed 1.16 mm or 10.8% of the canal diameter, whereas the ligamentum flavum bulge changed 2.68 mm or 24.3% of the canal diameter. Most of the changes in the bulges occurred with a small load application around the neutral position of the spine. The results of this study demonstrate that ligamentum flavum bulge can contribute significantly to canal encroachment in extension and that a flexed posture increases the sagittal diameter of the spinal canal.

引用

页码：93 / 101

页数：9

共 23 条

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