Traumatic injury means a condition of the body caused by a specific event or incident, or series of events or incidents, within a single workday or shift. Such condition must be caused by external force, including stress or strain, which is identifiable as to time and place of occurrence and member or function of the body affected.
20 CFR § 10.5
Certain words and phrases found in this part are defined in this section or in the FECA. Some other words and phrases that are used only in limited situations are defined in the later subparts of the regulations in this subchapter.