Abstract：
BACKGROUND: Primary objective was to investigate the prevalence of ossification of the posterior longitudinal ligament (OPLL) in a mixed demographic region, especially in the Pacific Island population. Secondary objective was to investigate the prevalence of diabetes mellitus and cervical diffuse skeletal hyperostosis (DISH) in patients with and without OPLL.
METHODS: Using the local picture archiving and communication system (PACS), cervical spine computed tomography (CT) examinations over a 2-month period were retrospectively assessed for the presence of OPLL. Basic demographic data were recorded-gender, age, ethnicity, presence of cervical DISH and the presence or absence of diabetes mellitus.
RESULTS: A total of 1692 CT examinations were included in the study. The distribution of the ethnic groups was 57.3% European, 12.09% Pacific peoples, 11.9% Māori, 11.53% Asian, 0.95% Middle Eastern/Latin American/African and 6.3% not specified. Overall, 47 cases of OPPL were identified (2.78%). The prevalence of OPPL in the Pacific ethnic groups was significantly higher than the European ethnic group 8.4% versus 0.6%, P < 0.05. The prevalence of OPLL was also significantly higher in the Asian (6.9%) and Māori (3.6%) than in the European ethnic group, P < 0.05. A significantly higher proportion of the patients with OPLL had underlying diabetes 20/47 (42.6%) compared with the study population 196/1692 (11.6%), P < 0.05. Seven cases of OPPL (14.9%) had associated cervical DISH, which was significantly higher compared with the study group (23/1692), P < 0.05. Using the Japanese Ministry of Health and Welfare classification system4, segmental type was the most common (34/47, 72.3%), followed by mixed (14.9%) and continuous types (12.8%).
CONCLUSIONS: The prevalence of OPLL is significantly higher among the Pacific populations in Auckland. There is also increased prevalence in the Asian and Māori populations.
METHODS: Using the local picture archiving and communication system (PACS), cervical spine computed tomography (CT) examinations over a 2-month period were retrospectively assessed for the presence of OPLL. Basic demographic data were recorded-gender, age, ethnicity, presence of cervical DISH and the presence or absence of diabetes mellitus.
RESULTS: A total of 1692 CT examinations were included in the study. The distribution of the ethnic groups was 57.3% European, 12.09% Pacific peoples, 11.9% Māori, 11.53% Asian, 0.95% Middle Eastern/Latin American/African and 6.3% not specified. Overall, 47 cases of OPPL were identified (2.78%). The prevalence of OPPL in the Pacific ethnic groups was significantly higher than the European ethnic group 8.4% versus 0.6%, P < 0.05. The prevalence of OPLL was also significantly higher in the Asian (6.9%) and Māori (3.6%) than in the European ethnic group, P < 0.05. A significantly higher proportion of the patients with OPLL had underlying diabetes 20/47 (42.6%) compared with the study population 196/1692 (11.6%), P < 0.05. Seven cases of OPPL (14.9%) had associated cervical DISH, which was significantly higher compared with the study group (23/1692), P < 0.05. Using the Japanese Ministry of Health and Welfare classification system4, segmental type was the most common (34/47, 72.3%), followed by mixed (14.9%) and continuous types (12.8%).
CONCLUSIONS: The prevalence of OPLL is significantly higher among the Pacific populations in Auckland. There is also increased prevalence in the Asian and Māori populations.
摘要：
背景：主要目的是调查混合人口统计学区域后纵韧带骨化（OPLL）的患病率，特别是在太平洋岛屿人口中。次要目的是调查有或没有OPLL的患者中糖尿病和宫颈弥漫性骨骼肥大（DISH）的患病率。
方法：使用本地图片存档和通信系统（PACS），回顾性评估了2个月的颈椎计算机断层扫描（CT）检查是否存在OPLL。基本人口统计数据记录-性别，年龄,种族,宫颈盘的存在和糖尿病的存在或不存在。
结果：本研究共纳入1692例CT检查。种族分布为欧洲的57.3%,12.09%太平洋居民，11.9%毛利人，11.53%亚洲人，0.95%中东/拉丁美洲/非洲和6.3%未指定。总的来说,发现OPPL47例(2.78%)。太平洋族裔群体的OPPL患病率明显高于欧洲族裔群体的8.4％和0.6％，P<0.05。OPLL的患病率在亚洲（6.9％）和毛利人（3.6％）中也明显高于欧洲种族，P<0.05。与研究人群196/1692（11.6％）相比，患有OPLL的患者中有20/47（42.6％）的潜在糖尿病患者比例明显更高，P<0.05。OPPL7例(14.9%)合并宫颈DISH,显着高于研究组（23/1692），P<0.05。使用日本厚生省分类系统4，节段型最常见（34/47，72.3％），其次是混合型(14.9%)和连续型(12.8%)。
结论：在奥克兰的太平洋人群中，OPLL的患病率明显较高。亚洲和毛利人的患病率也有所增加。
方法：使用本地图片存档和通信系统（PACS），回顾性评估了2个月的颈椎计算机断层扫描（CT）检查是否存在OPLL。基本人口统计数据记录-性别，年龄,种族,宫颈盘的存在和糖尿病的存在或不存在。
结果：本研究共纳入1692例CT检查。种族分布为欧洲的57.3%,12.09%太平洋居民，11.9%毛利人，11.53%亚洲人，0.95%中东/拉丁美洲/非洲和6.3%未指定。总的来说,发现OPPL47例(2.78%)。太平洋族裔群体的OPPL患病率明显高于欧洲族裔群体的8.4％和0.6％，P<0.05。OPLL的患病率在亚洲（6.9％）和毛利人（3.6％）中也明显高于欧洲种族，P<0.05。与研究人群196/1692（11.6％）相比，患有OPLL的患者中有20/47（42.6％）的潜在糖尿病患者比例明显更高，P<0.05。OPPL7例(14.9%)合并宫颈DISH,显着高于研究组（23/1692），P<0.05。使用日本厚生省分类系统4，节段型最常见（34/47，72.3％），其次是混合型(14.9%)和连续型(12.8%)。
结论：在奥克兰的太平洋人群中，OPLL的患病率明显较高。亚洲和毛利人的患病率也有所增加。
