title: The blade of grass sign.
authors.affiliation: Department of Diagnostic Radiology, Mayo Clinic and Foundation, Rochester, MN, USA. kwittenberg@stpaulrad.com
authors.forename: K
authors.initials: K
authors.lastname: Wittenberg
mesh_terms: D006801:Humans; D010001:Osteitis Deformans / Q000000981:diagnostic imaging*; D011859:Radiography