Roots avulsion injury is the most severe injury type of the brachial plexus lesions characterized by the interruption of rootlets from cervical cord.

• 臂丛神经根性撕脱伤是臂丛神经根在脊髓部位丝状结构的断裂,又称节前损伤,是臂丛神经损伤中最为严重的类型。