The supinator notch sign in rheumatoid arthritis.
Erosion of the ulna, giving a notch-like appearance in the region of the supinator groove, is reported in 18% of 110 unselected outpatients attending a rheumatoid clinic. The characteristic radiological, arthrographic and scintigraphic findings are presented. The mechanism, significance and differential diagnosis is discussed.
D000368:Aged; D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging*; D004551:Elbow Joint / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D011877:Radionuclide Imaging; D014457:Ulna / Q000000981:diagnostic imaging*