Figure 4.

MRI was performed including sagittal (A, C) and axial (B, D) proton density sequences of the left elbow. A high-grade insertional partial tear of the biceps tendon at the radial tuberosity was identified (A, B – arrows). A large septate ganglion (C, D – arrowheads) was noted communicating with the bicipitoradial bursa, compressing the posterior interosseous nerve (D – star) at the supinator muscle. Images courtesy of Hollis G. Potter, MD.