Ulnar variance determination.
D001847:Bone Diseases / Q000000981:diagnostic imaging; D001852:Bone Lengthening; D006801:Humans; D008433:Mathematics; D011859:Radiography; D011884:Radius / Q000000981:diagnostic imaging; D014457:Ulna / Q000000981:diagnostic imaging*; D014953:Wrist / Q000000981:diagnostic imaging*