Udén A, Johnsson K E, Jonsson K, Pettersson H
Spine (Phila Pa 1976). 1985 Mar;10(2):171-4. doi: 10.1097/00007632-198503000-00013.
To evaluate the width of the spinal canal when diagnosing spinal stenosis, 91 patients older than 59 years of age when undergoing myelography were studied. Using a sagittal diameter of 11 mm as border for the diagnosis of spinal stenosis, it was found that 31 of the 66 patients with spinal claudication, suspicion of spinal claudication and sciatic pain fulfilled this criterion and that 3/25 of the control group and those with atypic symptoms had a sagittal diameter of 11 mm or less. Five patients showed a complete block on the myelogram, and all of them had a typical spinal claudication. The spinal canal will narrow with age in asymptomatic patients as well, and the myelographic stenosis in elderly patients is not always equivalent to a clinical diagnosis of spinal stenosis.
为评估诊断椎管狭窄时椎管的宽度，对91例年龄大于59岁且接受脊髓造影的患者进行了研究。以矢状径11mm作为椎管狭窄的诊断界限，发现66例有间歇性跛行、疑似间歇性跛行和坐骨神经痛的患者中，有31例符合该标准，而对照组及有非典型症状的患者中有3/25的矢状径为11mm或更小。5例患者脊髓造影显示完全梗阻，且均有典型的间歇性跛行。无症状患者的椎管也会随年龄增长而变窄，老年患者的脊髓造影狭窄并不总是等同于椎管狭窄的临床诊断。
