Hasegawa T, An H S, Haughton V M, Nowicki B H
Department of Orthopaedic Surgery, Medical College of Wisconsin, Milwaukee.
J Bone Joint Surg Am. 1995 Jan;77(1):32-8.
One hundred lumbar intervertebral foramina from eighteen spines of fresh cadavera were studied to assess the relationship between compression of the nerve root and the height of the intervertebral disc and the morphological characteristics of the intervertebral foramen as determined on cryomicrotome sections. The critical posterior disc height and the critical foraminal height that were associated with entrapment and compression of the nerve root were determined. Significant positive correlations were demonstrated between compression of the nerve root and the posterior disc height, the foraminal height, and the foraminal cross-sectional area for the four intervertebral levels between the second lumbar and first sacral vertebrae. Nerve-root compression was evident in twenty-one of the 100 foramina, in eight of the ten foramina in which the posterior disc height was four millimeters or less, and in four of the five foramina in which the foraminal height was fifteen millimeters or less. These critical dimensions may be indicators of foraminal stenosis in the lumbar spine. However, compression of a spinal nerve root does not always cause sciatica, and the clinical findings must always be taken into account when a diagnosis of stenosis is considered.
对取自18具新鲜尸体脊柱的100个腰椎椎间孔进行研究，以评估神经根受压与椎间盘高度之间的关系，以及在冷冻切片上确定的椎间孔形态特征。确定了与神经根卡压相关联的关键椎间盘后高度和关键椎间孔高度。在第二腰椎至第一骶椎之间的四个椎间水平上，神经根受压与椎间盘后高度、椎间孔高度和椎间孔横截面积之间呈现出显著的正相关。在100个椎间孔中有21个存在神经根受压，在椎间盘后高度为4毫米或更小的10个椎间孔中有8个，在椎间孔高度为15毫米或更小的5个椎间孔中有4个。这些关键尺寸可能是腰椎椎间孔狭窄的指标。然而，脊神经根受压并不总是导致坐骨神经痛，在考虑狭窄诊断时必须始终考虑临床发现。
