DISC DEGENERATION AFFECTS THE MULTIDIRECTIONAL FLEXIBILITY OF THE LUMBAR SPINE

被引：309

作者：

MIMURA, M ^{[1
]}

PANJABI, MM ^{[1
]}

OXLAND, TR ^{[1
]}

CRISCO, JJ ^{[1
]}

YAMAMOTO, I ^{[1
]}

VASAVADA, A ^{[1
]}

机构：

[1] YALE UNIV, SCH MED, DEPT ORTHOPAED & REHABIL, BIOMECH LAB, NEW HAVEN, CT 06510 USA

来源：

SPINE | 1994年 / 19卷 / 12期

关键词：

LUMBAR FLEXIBILITY; DISC DEGENERATION; LUMBAR SPINE BIOMECHANICS; NEUTRAL ZONE;

D O I：

10.1097/00007632-199406000-00011

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

Study Design. An in vitro biomechanical investigation using human lumbar cadaveric spine specimens was undertaken to determine any relationship between intervertebral disc degeneration and nonlinear multidirectional spinal flexibility. Summary of Background Data. Previous clinical and biomechanical studies have not established conclusively such a relationship. Methods. Forty-seven discs from 12 whole lumbar spine specimens were studied under the application of flexion-extension, axial rotation, and lateral bending pure moments. Three flexibility parameters were defined (neutral zone (NZ), range of motion (ROM), and neutral zone ratio (NZR = NZ/ROM)) and correlated with the macroscopic and radiographic degeneration. Results and Conclusions. In flexion-extension, the ROM decreased and NZR increased with degeneration. In axial rotation, NZ and NZR increased with degeneration. In lateral bending, the ROM significantly decreased and the NZR increased with degeneration. In all three loading directions, the NZR increased, indicating greater joint laxity with degeneration.

引用

页码：1371 / 1380

页数：10

共 57 条

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