PMC4898297_01
49-year-old woman with retinoic acid arthropathy. Anteroposterior radiograph of the right elbow shows hyperostosis, especially involving the lateral humeral epicondyle at the origin of the extensor tendons (white arrow). Hyperostosis is also seen involving the sublime tubercle (yellow arrow).
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Bilateral elbow radiographs demonstrated hyperostosis, especially involving the proximal ulnas, bilateral triceps tendon insertions, and the right lateral humeral condyle (Figure 1, Figure 2, Figure 3).
49-year-old woman with retinoic acid arthropathy. Anteroposterior radiograph of the asymptomatic left elbow shows hyperostosis at the sublime tubercle (arrow).
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Bilateral elbow radiographs demonstrated hyperostosis, especially involving the proximal ulnas, bilateral triceps tendon insertions, and the right lateral humeral condyle (Figure 1, Figure 2, Figure 3).
49-year-old woman with retinoic acid arthropathy. Lateral radiograph of the right elbow shows hyperostosis involving the olecranon process, but no soft-tissue swelling adjacent to this site, joint effusion, or fracture.
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Bilateral elbow radiographs demonstrated hyperostosis, especially involving the proximal ulnas, bilateral triceps tendon insertions, and the right lateral humeral condyle (Figure 1, Figure 2, Figure 3). No fracture, dislocation, joint effusion, or radiographic evidence of triceps tendon tear was evident in the right elbow (Fig. 3).
49-year-old woman with retinoic acid arthropathy. Lateral radiograph of the thoracic spine shows flowing ossification of the anterior longitudinal ligament of several thoracic vertebral bodies. The disc spaces and vertebral body heights are normal.
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Although no prior elbow radiographs were available for comparison, radiographs of the thoracic spine from two years prior also showed flowing ossification of the anterior longitudinal ligament with relatively maintained disc spaces (Fig. 4).
49-year-old woman with retinoic acid arthropathy. AP radiograph of the pelvis shows enthesopathy at the iliolumbar ligament insertions (black arrow), anterior superior iliac spines (white arrow), and hamstring tendon (yellow arrow) attachments bilaterally.
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An AP radiograph of the pelvis from one year prior showed multiple sites of hyperostosis, including at the iliac crests (Fig. 5).