Which term describes the loss of use of a body part as defined by the AMA Guides?

The term that best describes the loss of use of a body part as defined by the AMA Guides is impairment. Impairment refers specifically to a reduction in the function or the ability of a body part or system to perform its normal functions. This is distinct from other terms such as injury, which refers to physical damage or harm to the body, or disability, which encompasses the broader impact on a person's ability to perform daily activities and may take into account societal and environmental factors. Prognosis, on the other hand, pertains to a prediction about the likely course or outcome of a condition.

In the context of the AMA Guides, impairment focuses on the measurable functional limitations arising from an anatomical or psychological abnormality, thus making it the most appropriate term for describing the loss of use of a body part. Understanding this distinction is crucial for medical evaluators as they assess an individual’s condition and its effects on their physical abilities.