MECHANICAL-BEHAVIOR OF THE HUMAN LUMBAR AND LUMBOSACRAL SPINE AS SHOWN BY 3-DIMENSIONAL LOAD-DISPLACEMENT CURVES
MECHANICAL-BEHAVIOR OF THE HUMAN LUMBAR AND LUMBOSACRAL SPINE AS SHOWN BY 3-DIMENSIONAL LOAD-DISPLACEMENT CURVES
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DOI：
10.2106/00004623-199403000-00012
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发表时间：
1994-03-01
影响因子：
5.3
通讯作者：
CRISCO, JJ
中科院分区：
文献类型：
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作者：
PANJABI, MM;OXLAND, TR;CRISCO, JJ
腰椎区域是脊柱疾病的常见部位，包括下腰痛和脊柱创伤。临床研究已经证实，一些下腰痛患者会出现异常的椎间运动。作为一个基线，需要了解正常的脊柱运动，以及所有固有的复杂性。本研究记录了从第一腰椎和第二腰椎到第五腰椎和第一腰椎之间的每个腰椎水平的完整的三维弹性物理特性。研究对象为9具新鲜冷冻的人身体腰椎标本。应用纯屈伸力矩、双侧轴向扭矩和双侧侧弯，并用立体摄影测量椎间的三维运动。这些运动以一组六条载荷-位移曲线的形式呈现，量化了椎间的旋转和平移。结果表明，运动曲线是非线性的，运动是耦合的。临床相关性：当对脊柱施加载荷或位移，或两者兼而有之时，脊柱物理特征的知识在临床上很重要。为了更好地了解脊柱不稳定与下腰痛和脊柱创伤后的临床问题和治疗，不仅有必要了解脊柱的运动量，而且有必要了解本研究记录的非线性和耦合的运动特征。
The lumbar region is a frequent site of spinal disorders, including low-back pain, and of spinal trauma. Clinical studies have established that abnormal intervertebral motions occur in some patients who have low-back pain. A knowledge of normal spinal movements, with all of the inherent complexities, is needed as a baseline. The present study documents the complete three-dimensional elastic physical properties of each lumbar intervertebral level from the level between the first and second lumbar vertebrae through the level between the fifth lumbar and first sacral vertebrae. Nine whole fresh-frozen human cadaveric lumbar-spine specimens were used. Pure moments of flexion-extension, bilateral axial torque, and bilateral lateral bending were applied, and three-dimensional intervertebral motions were determined with use of stereophotogrammetry. The motions were presented in the form of a set of six load-displacement curves, quantitating intervertebral rotations and translations. The_curves were found to be non-linear, and the motions were coupled. The ranges of motion were found to compare favorably with reported values from in vivo studies.CLINICAL RELEVANCE: Knowledge of the physical characteristics of the spine is clinically important whenever loads or displacements, or both, are applied to the spine. It is necessary to understand not only the amounts of spinal motion, but also the motion characteristics of non-linearity and coupling, which are documented in the present study, in order to better understand the clinically important problems, and treatment, of spinal instability in association with low-back pain and after spinal trauma.