What term describes an impact on the body by objects that cause injury without penetrating soft tissues or internal organs?

Blunt trauma refers to injuries that occur when an object strikes the body without penetrating the skin or causing an open wound. This type of trauma impacts soft tissues and can lead to various injuries such as contusions, fractures, and internal bleeding, all of which can result from the force of the impact.

In contrast, piercing injuries involve objects that break the skin and enter the body, leading to open wounds. An open wound specifically denotes a break in the skin or mucous membrane, making it not applicable to the scenario where soft tissues remain intact despite injury. Acute injury describes injuries that occur suddenly or rapidly, but does not specifically address the mechanism of the trauma as blunt does. Thus, blunt trauma is the most accurate term for describing this type of injury where the skin remains unbroken but the body sustains damage due to external force.