title: What is causing this patient's chronic knee pain?
authors.affiliation: David Gelbart is a medical student at Lake Erie College of Osteopathic Medicine (LECOM), and a physician assistant in emergency medicine in Erie, Pa. Steven Ward is an orthopedic resident at LECOM Health in Erie, Pa. The authors have disclosed no potential conflicts of interest, financial or otherwise.
authors.forename: David
authors.initials: D
authors.lastname: Gelbart
authors.forename: Steven
authors.initials: S
authors.lastname: Ward
mesh_terms: D018771:Arthralgia / Q000175:diagnosis* / Q000209:etiology; D059350:Chronic Pain / Q000175:diagnosis* / Q000209:etiology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000473:pathology*; D008875:Middle Aged; D010020:Osteonecrosis / Q000150:complications / Q000175:diagnosis*