Patient Positioning
Patient seated on a revolving stool, arm in slight internal rotation. Elbow flexed (90°), palm up (hand can be placed on the thigh).
Probe Positioning
The posterior glenohumeral joint is found by placing the transducer medially from the humeral head on a horizontal plane (long axis of infraspinatus tendon). Check the posterior labrum capsular complex (effusion? calcifications? lesion?) and the infraspinatus and teres minor tendons during external and internal rotation.
lc: labral calcifications (calcium pyrophosphate)
Note: Labral calcifications in a patient with calcium pyrophosphate deposition disease.