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>Ossification of the posterior longitudinal ligament in non-Asians: demographic, clinical, and radiographic findings in 43 patients
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Ossification of the posterior longitudinal ligament in non-Asians: demographic, clinical, and radiographic findings in 43 patients
Object Ossification of the posterior longitudinal ligament (OPLL) is a disorder afflicting as many as 2% of East Asians. However, reports of OPLL in non-Asians have been sporadic in the medical literature. This study describes clinical and radiographic findings with OPLL in non-Asians at a tertiary care center treating a diverse multiethnic population. Methods Over a 6-year period, 43 patients not of East Asian descent presented to an urban tertiary medical center with OPLL. Patient data, including ethnicity, spinal cord function, Nurick grade, radiographic findings, OPLL subtype, and degree of cervical stenosis, were recorded. Results The average patient age was 59 years (range 32–92 years) with 18 women and 25 men. There were 22 Caucasian patients, 17 Hispanic patients, and 4 Black patients. With respect to the radiographic findings, OPLL morphology was continuous in 19, segmental in 17, mixed in 6, and other in 1. Average canal diameter was 7.6 mm (range 4.2–9.0 mm) at the most stenotic points. The mean Nurick grade was 2.95 at presentation, but 7 of the patients had OPLL identified incidentally and with early or minimal symptoms and signs of myelopathy. Conclusions Ossification of the posterior longitudinal ligament in non-Asians demonstrates similar demographic and radiographic characteristics as in East Asians. The representation of different ethnic groups mirrors the demographics of the medical center population in general, showing no specific predilection for particular ethnic groups. Surgical decompression in appropriately selected patients results in similar rates of improvement when compared with the Japanese literature.
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机译：后纵韧带（OPLL）的对象骨化是一种折衷的疾病，多达东亚的2％。但是，关于非亚洲人在非亚洲人的报告在医学文献中一直是零星的。本研究描述了在一个临床和射线照相调查中，在一个治疗各种不同民族人群的第三级护理中心的非亚洲人。方法超过6年期，43名不在东亚血清中呈现给与OPLL的城市三级医疗中心。记录了患者数据，包括种族，脊髓函数，纯碱，放射线摄影，OPLL亚型和宫颈狭窄程度。结果平均患者年龄为59岁（32-92岁），18名女性和25名男子。有22名白种人患者，17名西班牙裔患者和4名黑人患者。关于放射线摄影结果，OP11形态在19，17中连续，在6中混合在6中，在最狭窄的点处的平均管直径为7.6毫米（范围4.2-9.0mm）。介绍的均值为2.95，但7例患者偶然发现了OPLL，早期或最小的症状和肌钙病的迹象。结论非亚洲人后纵韧带的骨化证明了东亚的类似人口统计和放射线特征。不同族裔群体的代表将反映了医疗中心人口的人口统计学，展示了特定族裔的特定偏好。 Surgical decompression in appropriately selected patients results in similar rates of improvement when compared with the Japanese literature.
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