What term describes a grating or grinding sensation caused by fractured bone ends or joints rubbing together?

The term that describes a grating or grinding sensation caused by fractured bone ends or joints rubbing together is "crepitus." This phenomenon occurs when there is a disruption in the normal integrity of bone or joint structures, leading to direct contact between rough surfaces. Crepitus can be felt or heard during movement and is often associated with conditions such as fractures, joint inflammation, or any situation where there is damage to fibrous tissues that normally provide a smooth surface for movement.

Understanding this term is important for EMTs because recognizing crepitus during an assessment can provide crucial information about the patient's condition, particularly in the context of potential fractures or joint injuries. Identifying this symptom can guide EMTs in determining the appropriate response and treatment necessary for the patient.

The other terms listed do not describe this specific sensation: rhonchi refers to abnormal lung sounds, palpation is the act of examining the body by touch, and friction can refer to the resistance of surfaces sliding against each other without the specific context of bone or joint interaction.