DISK PRESSURE MEASUREMENTS
DISK PRESSURE MEASUREMENTS
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DOI：
10.1097/00007632-198101000-00020
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发表时间：
1981-01-01
期刊：
影响因子：
3
通讯作者：
NACHEMSON, AL
中科院分区：
文献类型：
--
作者：
NACHEMSON, AL
通过对离体椎间盘内压力的测量，证实了正常腰椎间盘髓核的流体力学性质。流体动力学性质似乎也存在于有点退化的椎间盘中，但不存在于更严重的紊乱中。在过去的20年里，在100多个人体内进行的椎间盘压力测量已经证明了腰椎间盘上的负荷如何随着受试者身体的位置以及在站立和坐着的各种任务的执行过程中而变化。与直立站立位时的压力或负荷相比，斜躺可使压力降低50- 80%，而无支撑坐姿则使负荷增加40%，前倾和举重增加100%以上，前屈和旋转的位置增加400%。在进行各种常用的强化练习的受试者中也观察到压力的大幅度增加。
By measurements of intradiscal pressure in vitro, the hydrostatic properties of the nucleus pulposus of normal lumbar intervertebral disc were proven. The hydrodynamic properties seem to exist also in the somewhat degenerated disc, but not in the more severely deranged ones. Intravitally-performed measurements of disc pressure over the last 20 years in more than 100 individuals have demonstrated how the load on the lumbar disc varies with the position of the subject's body and during the performance of various tasks, both in standing and in sitting. Compared with the pressure or load in the upright standing position, reclining reduces the pressure by 50–80%, while unsupported sitting increases the load by 40%, forward leaning and weight lifting by more than 100%, and the position of forward flexion and rotation by 400%. Large augmentations in pressure were also observed in subjects performing various commonly prescribed strengthening exercises.