title: Test of radiographic interpretation. Seronegative spondyloarthropathy (psoriatic arthritis).
abstract: Radiographs of the foot from five patients with different manifestations of the same disease are presented. Identify the specific radiographic abnormalities in each case, and name the disorder that is most likely responsible for the observed alterations.
mesh_terms: D001168:Arthritis / Q000000981:diagnostic imaging*; D006801:Humans; D011565:Psoriasis / Q000000981:diagnostic imaging*; D011859:Radiography; D014033:Toe Joint / Q000000981:diagnostic imaging*