The brachial plexus can be stretched when the arm is on an arm board, particularly if it is hyperabducted to make room for the surgeon or an assistant or for administration of intravenous therapy.
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- 上肢置于托板上时可发生牵拉损伤,特别是在为了给术者或助手让出手术空间.或为方便静脉注射而使上肢过度外展时更易发生。