Grenier N, Greselle J F, Vital J M, Kien P, Baulny D, Broussin J, Senegas J, Caille J M
Service de Radiologie, Hôpital Pellegrin Tripode, Bordeaux, France.
Radiology. 1989 Apr;171(1):197-205. doi: 10.1148/radiology.171.1.2928526.
The posterior and anterior longitudinal ligaments of the lumbar spine appear on magnetic resonance (MR) images as thin lines of very low signal intensity in all spin-echo sequences. They cover the periphery of the outer fibers of the anulus fibrosus on sagittal images. The lumbar spine of 17 patients with 19 disk herniations was prospectively evaluated with MR imaging, and these findings were correlated with surgical findings. At surgery the posterior ligament was found to be disrupted in eight cases and intact in 11. Absence of a low-signal peripheral line around the herniated nucleus pulposus (HNP) was the most reliable sign of ligament rupture (no false-negative or false-positive findings). The peripheral line appeared to be interrupted in four cases, two of which were falsely positive. The two false-positive cases were related to a chemical shift artifact between epidural fat and the HNP. Presence of a normal and continuous peripheral line outlining the HNP excluded ligament disruption. The overall sensitivity for detecting disruption was 100%, and the specificity was 78%.
腰椎的前纵韧带和后纵韧带在磁共振（MR）图像上，在所有自旋回波序列中均表现为极低信号强度的细线。在矢状位图像上，它们覆盖纤维环外层纤维的周边。对17例患有19处椎间盘突出症患者的腰椎进行了MR成像前瞻性评估，并将这些发现与手术结果进行了关联。手术中发现8例后纵韧带中断，11例完整。突出的髓核（HNP）周围缺乏低信号外周线是韧带破裂最可靠的征象（无假阴性或假阳性结果）。4例外周线似乎中断，其中2例为假阳性。这2例假阳性病例与硬膜外脂肪和HNP之间的化学位移伪影有关。勾勒出HNP的正常且连续的外周线的存在排除了韧带中断。检测韧带中断的总体敏感性为100%，特异性为78%。
