Patient Positioning
Patient seated on a revolving stool, arm in slight internal rotation. Elbow flexed (90°), palm up (hand can be placed on the ipsilateral thigh).
Probe Positioning
After scanning the glenohumeral joint, the tendons and muscle bellies on transverse planes (long axis of the tendons) examine these structures on their short axis statically and dynamically (internal and external rotation of the arm).
Note: Interruption of continuity of the tendon of the infraspinatus muscle with retraction due to overuse injury.
Note: almost complete tear of the infraspinatus tendon which is best visible during dynamic scanning.