title: Orthopaedic case of the month: a 50-year-old woman with persistent knee pain.
authors.affiliation: Department of Orthopaedic Oncology, Mount Clemens Regional Medical Center and Great Lakes Cancer Institute/Ted B. Wahby Cancer Center, 1000 Harrington Street, Mount Clemens, MI 48043, USA. bewalczak@gmail.com
authors.forename: Brian E
authors.initials: BE
authors.lastname: Walczak
authors.forename: Dorothy M
authors.initials: DM
authors.lastname: Halperin
authors.forename: Rabei W
authors.initials: RW
authors.lastname: Bdeir
authors.forename: Ronald B
authors.initials: RB
authors.lastname: Irwin
mesh_terms: D001847:Bone Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D005269:Femur / Q000473:pathology; D015618:Histiocytosis, Sinus / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000378:metabolism / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D007717:Knee; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010146:Pain / Q000209:etiology; D011859:Radiography; D012598:Sclerosis; D013977:Tibia / Q000473:pathology