title: Don't patients have two knees?
authors.forename: Barry A
authors.initials: BA
authors.lastname: Harrison
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Destephano
authors.forename: Martin L
authors.initials: ML
authors.lastname: De Ruyter
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000706:statistics & numerical data*; D016208:Databases, Factual; D006801:Humans; D011183:Postoperative Complications / Q000453:epidemiology*; D012107:Research Design; D018401:Sample Size