Disc Degeneration in the Ossification of Posterior Longitudinal Ligament.

概要

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In order to investigate the participation of cevical disc degeneration in the ossification of the posterior longitudinal ligament [OPLL], we studied cervical disc degeneration of 40 patients of OPLL (33 males, 7 females; average age, 54 years). By disc index in plain roentgenogram, cervical disc degeneration of OPLL patients was examined comparatively with the patients of cervical spondylotic myelopathy [CSM] (30 malesa, 10 females; average age, 56 years) and controls (40 males, 40 females; average age, 26 years). Furthermore by magnetic resonance imaging, the degree of disc degeneration and the shape of extruded disc of OPLL patients was studied in comparison with CSM patients. Cervical disc degeneration of OPLL patients occurs frequently in association wiht location of ossification. The degree of the disc degeneration of OPLL patients is moderate, and much different from the degree of osteoathritis with severly narrow disc space, or typical disc herniation extruded throughout posterior longitudinal ligament.
西日本整形・災害外科学会の論文