Abstract: Early-stage rheumatoid arthritis (RA) often harbors a hidden threat: sarcopenia, a silent contributor to osteoporosis and fractures. Assessing muscle mass and quality, particularly during active RA periods when joint mobility hinders strength and function evaluations, becomes crucial. Imaging techniques emerge as invaluable tools in this diagnostic puzzle, offering accurate quantification of muscle status in RA patients. This article delves into advancements of various imaging modalities in unraveling RA-related sarcopenia.