Which term describes a grating or grinding sensation from fractured bone ends or joints?

Crepitus refers to the grating or grinding sensation that occurs when fractured bone ends or joints rub against each other. This phenomenon is often associated with conditions such as arthritis or fractures and can be heard or felt by a person or a clinician upon moving the affected area. The term derives from the Latin word "crepare," which means "to crack" or "to rattle," aptly describing the sound and feeling caused by the mechanical interaction of rough surfaces.

Palpation, while being a technique used to examine areas of the body for abnormalities, does not specifically describe the sensation associated with fractured bones. Edema refers to swelling caused by fluid accumulation in tissues, which may occur due to injury but is unrelated to the sensation felt during bone or joint movement. Spasticity involves increased muscle tone or stiffness and is not relevant to the sensation resulting from bone or joint injuries. Thus, crepitus is the most accurate term to describe the distinctive sensation associated with surface irregularities in bones and joints.