title: Letter to the editor.
authors.affiliation: Department of Psychology, York University, Toronto, Ontario, Canada Institute for Work & Health, Toronto, Ontario, Canada.
authors.forename: Joel
authors.initials: J
authors.lastname: Katz
authors.forename: Teresa J
authors.initials: TJ
authors.lastname: Marin
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007431:Intraoperative Complications / Q000503:physiopathology*; D008297:Male; D017288:Pain Threshold / Q000502:physiology*; D010149:Postoperative Pain / Q000209:etiology*; D016059:Range of Motion, Articular / Q000502:physiology*