Multiple alternate fractures are those that present injuries at several levels of the spine separated by at least one healthy vertebral body. A posttraumatic prevalence of up to 23% is reported.^3–5 There are no reports in Argentina. The purpose of this study is to report the prevalence of multiple alternate spine fractures in five hospitals of the City of Buenos Aires, Argentina, and evaluate its connection to other relevant characteristics. Inclusion criteria involve acute fractures of the spine. Classifications used were the following: cervical subaxial⁸ and thoracolumbar⁹ AO, Anderson for odontoids,^{15, 16} Effendi Laurin¹⁷ and Geweiler,^{18, 19} ASIA,^{20, 21} and Frankel.²² Statistical analysis consists of two groups: “Alternate” and “Contiguous.” Sample distribution, Shapiro-Wilk or Kolmogorov Smirnov test, was used. In comparison of continuous variables, “Student’s t-test or the Mann-Whitney U test” was used. To compare the categorical variables, Chi2 test or Fisher’s exact test was used. In data analysis, IBM SPSS Macintosh software, version 24.0 (IBM Corp., Armonk, NY, USA), was used. From the five hospitals of Buenos Aires, 514 medical records were reviewed, and 120 patients included, from April 2007 to April 2017. Of the total of spine fractures, 56 (46.7%) were simple, 35 (29.2%) were multiple contiguous, and 29 (24.1%) were multiple alternate. Fifty-four (45%) patients were women, average age of the sample: 40 years old. Within the group of multiple alternate fractures, the cervical area was the most affected in 16 (55.1%) patients. Fractures of nine (31%) patients of the Alternate group were related to a labor accident (9.9% contiguous, significant p = 0.02). Fourteen (48.3%) patients of the Alternate group presented an associated injury (23 patients [25.3%] of the contiguous fractures, with significance p = 0.02). As regards the International Publications, the prevalence of multiple alternate fractures was 24.1% (17 or 19%)^{4, 5, 23, 24} with similar production mechanism, male predominance, and an average of 40 years old.^{3, 5, 23} The location was similar: cervico-thoracic 24.1%. One in four patients admitted in our centers, with a spine fracture, had at least other vertebrae fractured at a distance. These were associated with neurological alterations, extra-spinal injuries, and labor accidents.

中文翻译：

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高能脊柱损伤多发性骨折观察性回顾性研究

多发性交替性骨折是指在至少由一个健康的椎体分隔开的多个水平脊柱处造成损伤的骨折。据报道，创伤后患病率高达23％。^3-5阿根廷没有任何报告。这项研究的目的是报告阿根廷布宜诺斯艾利斯市的五家医院多发交替性脊柱骨折的患病率，并评估其与其他相关特征的联系。纳入标准包括急性脊柱骨折。所使用的分类如下：颈下轴⁸和胸腰椎⁹ AO，齿状类药物的安德森（Anderson）^，15、16阿芬第劳林（Effendi Laurin）¹⁷和盖威勒（Geweiler），^18、19亚洲^，20、21和弗兰克尔。²²统计分析包括两组：“备用”和“连续”。使用Shapiro-Wilk或Kolmogorov Smirnov试验进行样本分配。在比较连续变量时，使用了“学生t检验或Mann-Whitney U检验”。为了比较分类变量，使用了Chi2检验或Fisher精确检验。在数据分析中，使用了IBM SPSS Macintosh软件版本24.0（IBM Corp.，Armonk，NY，美国）。从2007年4月至2017年4月，从布宜诺斯艾利斯的五家医院检查了514例病历，其中包括120例患者。在脊柱骨折总数中，简单的56例（46.7％），多发的35例（29.2％），和29（24.1％）是多次轮换。54名患者（45％）是女性，样本平均年龄：40岁。在多处交替性骨折中，在16位（55.1％）患者中，宫颈区域受影响最大。候补组中有9名（31％）患者的骨折与劳动事故有关（9.9％连续，显着p  = 0.02）。交替组中有14名（48.3％）患者出现了相关的损伤（连续骨折23例[25.3％]，重要性p = 0.02）。就国际出版物而言，多发交替骨折的发生率为24.1％（17或19％）^{4、5、23、24，}具有相似的生产机制，男性占主导地位，平均年龄为40岁。^3，5，23的位置是相似的：颈胸24.1％。在我们中心收治的四分之一患有脊椎骨折的患者中，至少有其他椎骨在远处骨折。这些与神经系统改变，脊柱外伤和劳动事故有关。