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    In: ACR Open Rheumatology, Wiley, Vol. 2, No. 10 ( 2020-10), p. 565-572
    Abstract: To characterize in detail the structural bone changes associated with the deposition of monosodium urate crystals in the first metatarsophalangeal (MTP1) joint in patients with tophaceous gout. Methods Twenty patients with tophaceous gout and involvement of the MTP1 joint received both dual‐energy computed tomography (DECT) of the feet for the detection of tophi and high‐resolution peripheral quantitative computed tomography (HR‐pQCT) of the feet for the detection of bone erosions and osteophytes. Demographic and clinical data were collected. Tophi in DECT and erosions and osteophytes in HR‐pQCT were overlayed to define their anatomical relation. In addition, the feet of 20 sex‐ and age‐matched healthy controls were scanned to define the normal architecture of the MTP1 joint. Results Patients with gout had an increased number and extent of bone erosions and osteophytes compared with their healthy counterparts (erosions: 5 [0‐17] vs 1 [1‐2] , 45.32 mm 3 [7.26‐550.32] vs 0.82 mm 3 [0.15‐21.8]; osteophytes: 10.5 [0‐26] vs 1 [0‐10], 4.93 mm [0.77‐7.19 mm] vs 0.93 mm [0.05‐7.61 mm]; all P 〈 0.001). The median tophi volume detected by DECT (0.12 mm 3 [0.01‐2.53]) was highly associated with the total volume of erosions ( r = 0.597, P = 0.005). Conclusion Gout patients show increased changes in their bone microarchitecture. The extent of uric acid deposition is positively correlated with the extent of bone loss at the MTP1 joint, highlighting the strong cohesion of inflammation and erosive changes.
    Type of Medium: Online Resource
    ISSN: 2578-5745 , 2578-5745
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2971160-5
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