title: Radiologic evaluation of the ulnar styloid.
abstract: The ulnar styloid (US) architecture was examined radiologically and directly by dissection in 13 cadaver wrists to examine a potential relationship between US shape and US abutment syndrome and to determine an optimal radiographic view that could be used to detect US fractures. A higher incidence of US abutment syndrome in the radially deviated US type was observed by dissection. Radiographs taken at varying shoulder abduction angles suggested that the base of the US and ulnar head are not round. To best evaluate the fovea and the US for possible US fractures, radiographs should be taken with the glenohumeral joint abducted 45 degrees, the elbow flexed 90 degrees, the forearm in neutral rotation, and the x-ray beam directed through the wrist perpendicular to the floor.
authors.affiliation: Department of Orthopedic Surgery, Institute for Human Performance, SUNY Upstate Medical University, 750 East Adams St., Syracuse, NY 13210, USA.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Yanagida
authors.forename: Shoji
authors.initials: S
authors.lastname: Ishii
authors.forename: Walter H
authors.initials: WH
authors.lastname: Short
authors.forename: Frederick W
authors.initials: FW
authors.lastname: Werner
authors.forename: Marsha M
authors.initials: MM
authors.lastname: Weiner
authors.forename: Shunji
authors.initials: S
authors.lastname: Masaoka
mesh_terms: D004210:Dissection; D006801:Humans; D021621:Imaging, Three-Dimensional; D011187:Posture; D014057:Tomography, X-Ray Computed; D014457:Ulna / Q000000981:diagnostic imaging* / Q000473:pathology; D014458:Ulna Fractures / Q000000981:diagnostic imaging* / Q000473:pathology; D014954:Wrist Injuries / Q000000981:diagnostic imaging / Q000473:pathology; D014955:Wrist Joint / Q000000981:diagnostic imaging / Q000473:pathology