title: Scaphoid position angles: a clinical study.
abstract: This study sought to describe the oblique orientation of the scaphoid relative to the anatomic planes of the wrist in terms of two position angles. Longitudinal axes of the scaphoid are defined on posteroanterior (p.a.) and lateral radiographs. These axes, together with the corresponding longitudinal axes of the distal radius, are used to define the frontal and lateral radioscaphoid angles. These angles are called the scaphoid yaw and pitch, respectively. A database representing the normal variation of the scaphoid position angles is obtained from a set of 100 PA and lateral radiographs of structurally normal wrists in a rigorously defined neutral position. To the nearest whole number, the mean scaphoid yaw is 35 degrees with a standard deviation of 6 degrees, and the mean scaphoid pitch is 50 degrees with a standard deviation of 7 degrees.
authors.affiliation: Department of Radiology, University of Cincinnati Medical Center, Ohio, USA.
authors.forename: R M
authors.initials: RM
authors.lastname: Cantor
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002348:Carpal Bones / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography