Distribution of the arthritides in the hands

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Distribution of the arthritides in the hands Distribution of the arthritides in the hands. (A) Osteoarthritis is characterized by joint space narrowing, osteophyte formation, and subchondral sclerosis at the proximal and distal interphalangeal joints, as well as the carpometacarpal and interphalangeal joints of the thumb. Calcium pyrophosphate crystal inflammatory arthritis has a similar distribution, but with chondrocalcinosis characteristically seen at the wrist. (B) Rheumatoid arthritis is characterized by involvement of the radiocarpal, intercarpal, carpometacarpal, metacarpophalangeal, and proximal interphalangeal joints, central and marginal erosions, periarticular osteopenia, and joint deformities. Juvenile idiopathic arthritis (formerly juvenile rheumatoid arthritis) has a distribution similar to that of rheumatoid arthritis. (C) Erosive osteoarthritis is characterized by involvement of the proximal and distal interphalangeal joints, erosions with “gull-wing” deformities, and joint ankylosis. (D) Psoriatic arthritis is characterized by involvement of distal interphalangeal joints, erosion of the terminal tufts, “mouse-ear erosions,” pencil-in-cup deformities, “sausage digit,” joint ankylosis, and fluffy periosteal reaction. Source: Musculoskeletal, Introduction to Diagnostic Radiology Citation: Elsayes KM, Oldham SA. Introduction to Diagnostic Radiology; 2015 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/Books/1562/Elsayes_Ch07_Fig-C3-03.png&sec=95878588&BookID=1562&ChapterSecID=95878512&imagename= Accessed: March 11, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved