Takahashi K, Shima I, Porter R W
Department of Orthopaedic Surgery, Saitama Medical School, Japan.
Spine (Phila Pa 1976). 1999 Oct 1;24(19):2003-6. doi: 10.1097/00007632-199910010-00007.
The contact pressure between the nerve root and lumbar disc herniation was measured and compared with clinical features.
To assess levels of actual compression to the nerve root in clinical cases.
Actual levels of pressure to the nerve root of lumbar disc herniation in clinical cases is unknown.
The study was performed on 34 patients who had lumbar disc herniation. All of them had been treated by open discectomy. After laminotomy, nerve root pressure was measured by inserting a transducer between the nerve root and the disc herniation. The magnitude of pressure was compared with clinical features.
Nerve root pressures before discectomy were varied from 7 mm Hg to 256 mm Hg (mean, 53 mm Hg). After discectomy, the contact pressure was 0 mm Hg in all cases. There were no significant correlations between the magnitude of nerve root pressure and limits to the degree of straight leg raising, duration of symptoms, and age of the patients. However, the magnitude of the pressure in patients with neurologic deficits and trunk list was significantly higher than in the absence of these findings.
The contact pressure exerted by lumbar disc herniation on the nerve roots was recorded during surgical intervention, and the mean pressure was 53 mm Hg. The magnitude of nerve root pressure was not correlated with the degree of straight leg raising, but with the severity of neurologic deficits.
测量神经根与腰椎间盘突出症之间的接触压力，并与临床特征进行比较。
评估临床病例中神经根的实际受压程度。
临床病例中腰椎间盘突出症对神经根的实际压力水平尚不清楚。
对34例腰椎间盘突出症患者进行研究。所有患者均接受了开放性椎间盘切除术。椎板切除术后，通过在神经根与椎间盘突出之间插入传感器来测量神经根压力。将压力大小与临床特征进行比较。
椎间盘切除术前神经根压力在7毫米汞柱至256毫米汞柱之间（平均53毫米汞柱）。椎间盘切除术后，所有病例的接触压力均为0毫米汞柱。神经根压力大小与直腿抬高受限程度、症状持续时间和患者年龄之间无显著相关性。然而，有神经功能缺损和躯干侧弯的患者的压力大小明显高于无这些表现的患者。
在手术干预期间记录了腰椎间盘突出症对神经根施加的接触压力，平均压力为53毫米汞柱。神经根压力大小与直腿抬高程度无关，但与神经功能缺损的严重程度有关。
