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Fig. 5 | Arthritis Research & Therapy

Fig. 5

From: The importance of ultrasound in identifying and differentiating patients with early inflammatory arthritis: a narrative review

Fig. 5

Ultrasound imaging of bone erosions and crystal deposits. a Transverse view of second metacarpophalangeal joint in a patient with rheumatoid arthritis; arrowheads denote bone erosion. b Left, chondrosynovial urate deposition at the second metacarpophalangeal joint (arrows); right, at the same joint, intra- and peri-articular tophaceous deposits seen as heterogeneous collections (arrows). c Left, calcium pyrophosphate crystal deposition seen sandwiched within the cartilage; right, magnified view of the white rectangular area on the left

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