title: A 26-year-old HIV-positive hemophiliac with knee pain.
abstract: The following case is presented to illustrate the roentgenographic and clinical findings of a condition of interest to the orthopaedic surgeon. Initial history, physical findings, and roentgenographic examinations are found on the first page. The final clinical and roentgenographic differential diagnoses are presented on the following pages.
authors.affiliation: Department of Orthopaedic Rehabilitation, Chaim Sheba Medical Center, Tel-Hashomer Hospital, Israel.
authors.forename: M
authors.initials: M
authors.lastname: Heim
authors.forename: H
authors.initials: H
authors.lastname: Horoszowski
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D006679:HIV Seropositivity / Q000150:complications*; D006395:Hemarthrosis / Q000000981:diagnostic imaging*; D006467:Hemophilia A / Q000150:complications*; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging*; D008297:Male; D011859:Radiography