Objective: to prospectively evaluate the appropriateness, indications, risk factors, and epidemiology of patients with orthopaedic injuries transferred to a Level I trauma center.
目的：前瞻性评估骨创患者转送到一级创伤中心的合理性、适应症、风险因素、以及与创伤患者流行病学特征。
Level IV trauma center. A Level IV trauma center is expected to provide the initial care to an acutely injured patient despite limitations in resources.
四级创伤中心：对于四级中心希望其能够对急发的伤患做最初步的处理，即使其资源有限。
Level II trauma center. The Level II trauma center also provides definitive care to the injured and may be the principal hospital in the community.
二级创伤中心：二级创伤中心也同样对伤员提供最终的救治并可能是一个社区的中心医院。
Since definitive trauma care is usually not available at a level iv center, a well-practiced mechanism must be in place to ensure prompt transfer to a higher level of care.
因为对伤员的最终救治在四级中心是达不到的，所以一个确保向上级机构转送的有效机制也是必不可少的。
Methods. All patients with traumatic cervical spine injuries treated with HVI between 1998 and 2006 at a single level 1 trauma center were reviewed retrospectively.
方法：1998至2006年，在一个一级创伤中心，对所有应用HVI治疗的颈椎创伤患者进行回顾性分析。
Study Design. A retrospective study of a consecutive series of traumatic cervical spine injuries treated with halo vest immobilization (HVI) over an 8-year period at a level 1 trauma center.
研究设计：一组连续病例的回顾性研究，本组病例为一个一级创伤中心，8年内应用Halo背心固定（HVI）的颈椎创伤患者。
Study Design. A retrospective study of a consecutive series of traumatic cervical spine injuries treated with halo vest immobilization (HVI) over an 8-year period at a level 1 trauma center.
研究设计：一组连续病例的回顾性研究，本组病例为一个一级创伤中心，8年内应用Halo背心固定（HVI）的颈椎创伤患者。
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