The ultrasound examination is not quite foolproof in the case of small parcial intramuscular ruptures because it is able to reveal the changes of echogenicity, but is not able to differ exactly etiology of these changes. At intramuscular processes the mere localization of pathological changes into exactly localized structures, on which we can use other examining methods as MRI, is a big contribution. But if the rupture goes through the superficial fascia, or it is extensive enough, then the ultrasound is the exact examination with a high proceeds. In this case we find a pronounced constriction of the rotator cuff in the longitudinal section as following examination shows.
Picture and scheme of a constriction of
the rotator cuff in the longitudinal section at the rupture of the rotator cuff
picture and scheme of the examination of the rotator cuff on the unaffected side, notice the difference of the width of the rotator cuff in comparison with an affected side with the rupture – i.e. the constriction of the rotator cuff (see picture above)
picture and scheme of the comparison of a normal and
affected side (side with the rupture)