Photoclinic

A 33-year-old woman had lost active and passive movements of her right shoulder due to an acute onset of a severe pain of one month duration. She had no significant medical or surgical history. She had point tenderness over her greater tuberosity. Plain radiograph of the right shoulder showed a hazy calcification in the subacromial space. The humeral head had a subluxated position. Right shoulder magnetic resonance imaging (MRI) showed that the distance between the humeral head and the acromion was increased and there was a low- intensity soft tissue lesion on T1 and T2 images in the subacromial space. MRI demonstrated neither an intra-articular abnormality nor synovitis in the shoulder joint. Laboratory tests including ESR, CRP, and WBC were normal.