title: The pronator quadratus sign: its classification and diagnostic usefulness for injury and inflammation of the wrist.
abstract: The clinical value of the pronator quadratus radiological sign was investigated. Fresh undisplaced fractures of the distal radius and acute injuries of the distal radio-ulnar joint showed anterior displacement of the radiolucent shadow in 85% and 88% respectively, but normal subjects no displacement. In rheumatoid arthritis, the presence of synovitis of the wrist joint appeared to be correlated with a blurred shadow at the distal end.
authors.affiliation: Kyushu University, Fukuoka, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Sasaki
authors.forename: Y
authors.initials: Y
authors.lastname: Sugioka
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging*; D002648:Child; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D013585:Synovitis / Q000000981:diagnostic imaging*; D014458:Ulna Fractures / Q000000981:diagnostic imaging*; D014954:Wrist Injuries / Q000000981:diagnostic imaging*; D014955:Wrist Joint / Q000000981:diagnostic imaging*