Penetrating Axilla Injuries and Ceramic Plate Coverage: A Special Operations Case Series

The Department of Defense has continually refined body armor to mitigate battlefield injuries over the last 20 years. Penetrating axilla injuries remain challenging despite adoption of a four-plate ceramic armor system. This study investigates the efficacy of current armor configurations in reducing mortality and morbidity associated with axilla injuries.

This was a retrospective case series using afteraction reports from a single Special Operations unit. Records (786) from 2001-2018 were screened, yielding 11 meeting inclusion criteria. Data included injuries, body armor type, clinical interventions, and outcomes.

Analysis revealed significant mortality (45%) among casualties sustaining axilla injuries, with 100% mortality for those struck in uncovered side-plate regions under a two-plate system. In contrast, no fatalities occurred when injuries were within protected side-plate regions of a four-plate system. Injury patterns showed consistent thoracic cavity violations, emphasizing the need for robust protection strategies. This study underscores the efficacy of four-plate systems in reducing mortality compared to older configurations, particularly in protecting vital structures like great vessels and the heart. However, limitations in current side-plate coverage suggest potential gaps in protection, especially superiorly. Balancing protection with mobility remains crucial, as highlighted by operational challenges and weight concerns.

Findings support the role of side plates in mitigating axilla injuries but highlight the need for expanded coverage using improved material technologies. Fu-ture research should focus on enhancing ballistic protection without compromising operational agility and refining trauma management protocols for optimal casualty outcomes.