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Fig. 2A. —41-year-old male patient who suffered forced external and
abduction injury to left arm when falling down manhole. Transverse oblique
extended-field-of-view sonogram shows grade 3 tear with retracted and
echogenic (due to fat infiltration) sternal muscle belly (P) and subacute
hematoma (asterisk) adjacent to humerus (H). Note intervening linear
echogenic structure (arrowheads) that extends over hematoma inserting
into humerus deep relative to deltoid (D). Proximal aspect of this structure
did not contract on dynamic imaging and was presumed to be scar tissue.
