Figure 3

MRI examination performed at 6 months follow up. (A) Oblique coronal T2-weighted/turbo spin echo baseline MRI study of the left shoulder. The long arrow indicates diffuse high signal intensity within the infraspinatus muscle, which suggests fatty infiltration due to denervation. The arrowhead indicates the teres minor muscle, which appears normal in contrast to the infraspinatus muscle. (B) Oblique coronal T2-weighted/turbo spin echo MRI study of the left shoulder obtained during the six-month follow-up examination. The long arrow indicates diffuse high signal intensity within the infraspinatus muscle. The arrowhead indicates the teres minor muscle, which appears normal in contrast to the infraspinatus muscle. These changes are more extensive, and some loss of muscle volume is also shown, suggesting progression of the denervation effects.