PMC3505910_01
X ray left shoulder.
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fig1
X-ray showed an arthritic glenohumeral joint (Figure 1), and ultrasound showed no effusion. 
MRI left shoulder.
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fig2
CT scan and MRI (Figure 2) showed signs of osteomyelitis of the proximal humerus.
Excised Ethibond suture as focus of infection.
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fig3
A cyst (measuring 2.1 x 7.7 cm on MRI) was noted in the humeral head which contained the old Ethibond suture (Figure 3).