title: Classifications of patellofemoral disorders.
authors.affiliation: Maimonides Medical Center, New York, New York, USA.
authors.forename: R P
authors.initials: RP
authors.lastname: Grelsamer
mesh_terms: D006801:Humans; D007592:Joint Diseases / Q000145:classification; D007719:Knee Joint; D009985:Orthopedics; D009626:Terminology as Topic