This study established a robust reference for normative sonographic measurements and ratios for RTC muscles in an active, healthy, military population that accounts for sex-based differences in absolute muscle size. US offers a cost-effective, efficient, and validated alternative to magnetic resonance imaging for assessing RTC muscle size. The introduction of sonographic muscle ratios as a diagnostic tool has the potential to enhance personalized shoulder health assessment, enabling timely, accurate diagnoses and patient-centered treatment plans that can optimize warfighter readiness. Future research should determine if RTC muscle ratios are more predictive of shoulder pathology in symptomatic personnel than absolute measurements.
Powell et al. (Fri,) studied this question.