Figure 1 .

(A, B) Baseline ultrasound examination on longitudinal dorsal scan of the wrist joint of an 82 year old patient with rheumatoid arthritis (patient number 4). An intra-articular injection of triamcinolone acetonide (30 mg) was performed under sonographic guidance. Triamcinolone appeared as an echogenic area within the radiocarpal joint cavity (V). (C) Follow up ultrasound examination detected a clearly evident decrease of both joint cavity widening (GSS score reduced from 3 to 1) and power Doppler signals (PDS score reduced from 4 to 2). c, capitate bone; l, lunate bone; r, radius.