Nachemson A L, Schultz A B, Berkson M H
Spine (Phila Pa 1976). 1979 Jan-Feb;4(1):1-8. doi: 10.1097/00007632-197901000-00001.
The influences of age, sex, disc level, and degree of degenration on the mechanical behavior of 42 fresh cadaver lumbar motion segments are reported. The motions and intradiscal pressure changes that result from the application of flexion, extension, lateral bending, and torsional moments; compression; and anterior, posterior, and lateral shears are described. The authors find that the mean behaviors of the different segment classes sometimes differ, but these differences are seldom pronounced. Scatter in the behavior of individual motion segments is pronounced, and very often overshadows any class differences.
报告了年龄、性别、椎间盘节段和退变程度对42个新鲜尸体腰椎运动节段力学行为的影响。描述了施加屈曲、伸展、侧弯和扭转力矩、压缩以及前、后和侧方剪切力时产生的运动和椎间盘内压力变化。作者发现不同节段类别的平均行为有时存在差异，但这些差异很少很明显。单个运动节段行为的离散度很明显，而且常常掩盖了任何类别差异。
