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Uptodate Reference Title
Ultrasound of atrophic triceps and deltoid muscles
Ultrasound of atrophic triceps and deltoid muscles
Axial ultrasound images through the triceps (panel A) and deltoid (panel B) muscles showing the humerus (H) in both images. Note that both muscles are atrophic and have increased echogenicity (more so in the deltoid) that reduces the distinction of the bone edge. These images are from a 72-year-old patient with limb girdle dystrophy and prominent proximal weakness (MRC grade 3 of 5) in these muscles.
T: triceps; H: humerus; D: deltoid; MRC: Medical Research Council.