Ohtsuka K, Terayama K, Yanagihara M, Wada K, Kasuga K, Machida T, Matsushima S
Arch Orthop Trauma Surg (1978). 1987;106(2):89-93. doi: 10.1007/BF00435420.
This paper reports the results of a radiological population study on the ossification of the posterior longitudinal ligament (OPLL) in both the cervical and the thoracic spine among Japanese. The study was carried out in the Yachiho-mura district in the central part of Japan, where 5074 people were living. X-ray examinations were made of 1058 of the people; there were 440 men and 618 women, 50 or more years of age. The roentgenograms showed 34 cases of OPLL in the cervical spine (3.2%): 19 men (4.3%) and 15 women (2.4%). The condition was most frequently observed at the level of C-4. Radiological classification showed 18 cases of the segmental type, 11 of the continuous type, and five of a mixed type. There were eight cases of OPLL in the thoracic spine (0.8%), four in men (0.9%) and four in women (0.6%). OPLL in the thoracic spine was most frequently observed at the midthoracic levels. All eight cases showed a continuous type of ossification. There were three subjects with OPLL in both the cervical and the thoracic spine. Therefore, the number of subjects with OPLL in either the cervical or the thoracic spine was 39 (3.7%) total.
本文报告了一项针对日本人颈椎和胸椎后纵韧带骨化（OPLL）的放射学人群研究结果。该研究在日本中部的八丁村地区进行，那里居住着5074人。对其中1058人进行了X线检查，这些人年龄在50岁及以上，包括440名男性和618名女性。X线片显示颈椎OPLL有34例（3.2%）：男性19例（4.3%），女性15例（2.4%）。这种情况最常出现在C-4水平。放射学分类显示节段型18例，连续型11例，混合型5例。胸椎OPLL有8例（0.8%），男性4例（0.9%），女性4例（0.6%）。胸椎OPLL最常出现在胸段中部水平。所有8例均显示为连续型骨化。有3名受试者颈椎和胸椎均有OPLL。因此，颈椎或胸椎有OPLL的受试者总数为39例（3.7%）。
