title: Patellofemoral Instability.
authors.affiliation: Department of Orthopaedics, Geisinger Health System, Danville, Pennsylvania.
authors.forename: Gregory C
authors.initials: GC
authors.lastname: Fanelli
mesh_terms: D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000628:therapy*; D057071:Patellofemoral Joint