ObjectivesTo evaluate the prevalence of ultrasonographic gout specific signs of foot joints.MethodsThis is a cross-sectional study which includes 15 patients with chronic gout, defined according to the American College of Rheumatology criteria (ACR 1977). Ultrasound (US) examination was performed using a high-frequency linear probe (Toshiba Xario®, frequency (8–14 MHz)) in B mode. 330 articular sites were studied at their dorsal surface. The ultrasound has objectified the presence of two signs: hyperechoic band over the superficial margin of the articular cartilage described as a double contour (DC) and tophaceous deposits at the joint cavity.ResultsThe mean age at onset was 54.7±12,6 years, and the median diagnosis duration was 0 (0.3) years).The results of the US examination are summarized in Table 1.Table 1.Prevalence of ultrasonographic gout specific signs of hind-foot, mid-foot and Metatarso-phalangeal joints in the studied populationJoints (N=330)Double contour (%)Tophaceous deposits (%) Hind-foot 8,810Talocrural (N=30)13,313,3Subtalar:Lateral (N=30)3,310Medial (N=30)106,7 Mid-foot 14,432,2Talonavicular (N=30)13,313,3Intertarsal (N=30)6,743,3Tarsometatarsal (N=30)23,340 MTP (N=150) 11,318MTP 1 (N=30)33,356,7MTP 2 (N=30)13,313,3MTP 3 (N=30)6,73,3MTP 4 (N=30)06,7MTP 5 (N=30)3,310ConclusionsThis study showed a predilection for the gout specific ultrasound signs (DC and tophaceous deposits) in the tarsometatarsal and metatarsophalangeal joints, especially in the first MTP. The contribution of musculoskeletal ultrasound seems to be very interesting to objectify the presence of gout specific signs of the foot joints.Disclosure of InterestNone declared
ObjectivesTo present a booklet and a CD-ROM with a mini-atlas including 100 sections illustrating the normal ultrasound musculoskeletal anatomy.MethodsWe performed an ultrasound examination of large and small joints of the medical staff not suffering from any musculoskeletal disorder. Ultrasound examination was performed using a high-frequency linear probe (Toshiba Xario®, frequency (8–14 MHz)) in B mode. Finally, for the sake of clarity of the presentation of this library, we presented each image accompanied with another showing the valid positioning of the probe and an annotated schema for each section made.ResultsWe present in the form of CD-ROM and booklet a photo library of a mini-atlas.The joints studied are: The wrist and handThe elbowThe shoulderThe ankle and footThe kneeand the hip 100 sections were performed, we presented them together with images showing ther normal corresponding musculoskeletal anatomy, the valid positioning of the probe, and also an annotated schema corresponding to each section. We give here below the example of a section illustrating a cross-section of flexor digitorum superficialis and profondus tendonsConclusionsWe hope that we give to rheumatologists a simple tool to recall and standardize the practice of musculoskeletal ultrasound. We intend to enrich it, in the future, with the pathological images and interventional ultrasound videos.Disclosure of InterestNone declared
ObjectivesTo compare the prevalence of ultrasonographic gout specific signs at the dorsal and plantar surfaces of the metatarsophalangeal joints (MTP).MethodsThis is a cross-sectional study which includes 15 patients with chronic gout, defined according to the American College of Rheumatology criteria (ACR 1977). Ultrasound (US) examination was performed using a high-frequency linear probe (Toshiba Xario®, frequency (8–14 MHz)) in B mode. 150 articular sites were studied at their dorsal and plantar surfaces. The ultrasound has objectified the presence of two signs: hyperechoic band over the superficial margin of the articular cartilage described as a double contour (DC) and the tophaceous deposits at the joint cavity. We compared the prevalence of the two signs between the dorsal and palmar surfaces at each site studied.ResultsThe mean age at onset was 54.7±12,6 years, and the median diagnosis duration was 0 (0.3) years).The results of the US examination are summarized in Table 1.Table 1.Prevalence comparison of DC and tophaceous deposits between dorsal and plantar surfaces at MTP jointsJoints (N=150)Double contour (%) Tophaceous deposits (%) Dorsal surfacePlantar surfacePDorsal surfacePlantar surfaceP MTP 1 (N=30)33,3100,0356,76,70,01MTP 2 (N=30)13,30<0.00113,30<0.001MTP 3 (N=30)6,70<0.0013,30<0.001MTP 4 (N=30)00<0.0016,70<0.001MTP 5 (N=30)3,30<0.001100<0.001ConclusionsOur study suggests that globally, DC predilect significatily in dorsal than in plantar surfaces of MTP joints. These results should be verified on a larger population.Disclosure of InterestNone declared
ObjectivesTo evaluate the prevalence of ultrasonographic gout specific signs of hand and fingers joints.MethodsThis is a cross-sectional study which includes 15 patients with chronic gout, defined according to the American College of Rheumatology criteria (ACR 1977). Ultrasound (US) examination was performed using a high-frequency linear probe (Toshiba Xario®, frequency (8–14 MHz)) in B mode. 540 articular sites were studied at their dorsal surface. The ultrasound has objectified the presence of two signs: hyperechoic band over the superficial margin of the articular cartilage described as a double contour (DC) and the tophaceous deposits at the joint cavity.ResultsThe mean age at onset was 54.7±12,6 years, and the median diagnosis duration was 0 (0.3) years).The results of the US examination are summarized in Table 1.Table 1.Prevalence of ultrasonographic gout specific signs of the wrist, MCP, PIP and DIP joints in the studied populationJoints (N=540)Double contour (%)Tophaceous deposits (%) Wrist joints (N=120) 12,636Radiocarpal (N=30)2043,3Ulnocarpal (N=30)13,350Scaphotrapezial (N=30)3,316,7Trapeziometacarpal (N=3013,343,3 MCP (N=150) 818MCP 1 (N=30)3,316,7MCP 2 (N=30)13,333,3MCP 3 (N=30)6,716,7MCP 4 (N=30)6,73,3MCP 5 (N=30)1020 PIP (N=150) 416,6IP (N=30)3,330PIP 2 (N=30)6,716,7PIP 3 (N=30)6,720PIP 4 (N=30)3,310PIP 5 (N=30)06,7 DIP (N=120) 0,810DIP 2 (N=30)013,3DIP 3 (N=30)3,313,3DIP 4 (N=30)06,7DIP 5 (N=30)06,7ConclusionsThis study showed a predilection for the gout specific ultrasound signs (DC and tophaceous deposits) of the wrist and MCP joints. The contribution of musculoskeletal ultrasound seems to be very interesting to objectify the presence of gout specific signs in the hand and fingers joints.Disclosure of InterestNone declared
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