Background:The exact incidence of shoulder dislocation in the general population of the United States (US) has yet to be well studied.Purpose:To establish the current incidence and patterns of shoulder dislocations in the US, especially regarding sports-related activity.Study Design:Descriptive epidemiology study.Methods:This was a retrospective analysis of shoulder dislocations encountered in emergency departments in the US between 1997 and 2021 as recorded in the National Electronic Injury Surveillance System (NEISS). Data were further analyzed according to patient age, sex, and sports participation. Information from the United States Census Bureau was used to determine the overall incidence of dislocations.Results:A total of 46,855 shoulder dislocations were identified in the NEISS database, representing a national estimate of 1,915,975 dislocations (mean 25.2 per 100,000 person-years). The mean patient age was 35.3 years. More than half of the dislocations (52.5%) were sports-related, and basketball (16.4%), American football (15.6%), and cycling (9%) were the sports most commonly associated with dislocation. Most dislocations (72.1%) occurred in men. This disparity by sex was more significant for sports-related dislocations (86.1% in men) than nonsports-related dislocations (56.7% in men; P < .001). With sports-related dislocations, people <21 years experienced a significantly higher proportion versus those >39 years (44.6% vs 14.9%; P < .001), while the opposite distribution was seen with nonsports-related dislocations (<21 years: 12% vs >39 years: 51.7%; P < .001). Women outnumbered men with shoulder dislocation among people >61 years.Conclusion:Sports-related shoulder dislocations were more common among younger and male individuals than older and female individuals. Contact sports such as basketball and American football were associated with more shoulder dislocations compared with noncontact sports.

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1997 年至 2021 年美国急诊科治疗肩关节脱位的流行病学

背景：美国普通人群肩关节脱位的确切发生率尚未得到充分研究。目的：确定美国当前肩关节脱位的发生率和模式，特别是与体育相关的活动。研究设计：描述性流行病学研究。方法：这是对国家电子伤害监测系统 (NEISS) 记录的 1997 年至 2021 年间美国急诊科遇到的肩关节脱位的回顾性分析。根据患者年龄、性别和运动参与情况进一步分析数据。美国人口普查局的信息用于确定脱臼的总体发生率。结果：NEISS 数据库中总共发现了 46,855 例肩关节脱臼，代表全国估计有 1,915,975 例脱臼（平均每 100,000 人年 25.2 例）。患者平均年龄为 35.3 岁。超过一半的脱臼（52.5%）与运动有关，篮球（16.4%）、美式橄榄球（15.6%）和自行车（9%）是最常与脱臼相关的运动。大多数脱臼（72.1%）发生在男性。这种性别差异对于运动相关的脱位（男性为 86.1%）比非运动相关的脱位（男性为 56.7%；P < .001）更为显着。对于与运动相关的脱位，<21 岁的人经历的比例明显高于 >39 岁的人（44.6% vs 14.9%；P < .001），而与非运动相关的脱位则相反（<21 岁：12 % vs >39 岁：51.7%；P < .001)。在 61 岁以上的人群中，女性肩关节脱位的人数多于男性。结论：与运动相关的肩关节脱位在年轻人和男性中比老年人和女性更常见。与非接触性运动相比，篮球和美式橄榄球等接触性运动与更多肩部脱臼相关。