Hida K, Iwasaki Y, Koyanagi I, Abe H
Department of Neurosurgery, University of Hokkaido School of Medicine, Sapporo.
Neurol Med Chir (Tokyo). 1997 Feb;37(2):173-5; discussion 175-6. doi: 10.2176/nmc.37.173.
Anterior decompression of a cervical ossified posterior longitudinal ligament (OPLL) which involves the dura mater occasionally results in a postoperative cerebrospinal fluid fistula. Bone window computed tomography (CT) was carried out to detect dural defects in 21 patients with cervical OPLL. Twelve of 21 patients had double-layer OPLL, and nine had single-layer OPLL. Dural defects were present in 10 of the 12 patients with double-layer OPLL compared with only one of the nine patients with single-layer OPLL. In addition, greater stenosis of the spinal canal by the OPLL was also associated with dural defect. Preoperative bone window CT can indicate likely locations of dural defect in patients with OPLL.
涉及硬脑膜的颈椎后纵韧带骨化（OPLL）前路减压术偶尔会导致术后脑脊液漏。对21例颈椎OPLL患者进行骨窗计算机断层扫描（CT）以检测硬脑膜缺损。21例患者中，12例为双层OPLL，9例为单层OPLL。12例双层OPLL患者中有10例存在硬脑膜缺损，而9例单层OPLL患者中只有1例存在硬脑膜缺损。此外，OPLL导致的椎管狭窄程度加重也与硬脑膜缺损有关。术前骨窗CT可提示OPLL患者硬脑膜缺损的可能位置。
