title: In reply.
authors.affiliation: Hospital for Special Surgery - Weill Cornell Medical College, New York, New York (S.G.M.). memtsoudiss@hss.edu.
authors.forename: Stavros G
authors.initials: SG
authors.lastname: Memtsoudis
authors.forename: Edward R
authors.initials: ER
authors.lastname: Mariano
mesh_terms: D000058:Accidental Falls / Q000706:statistics & numerical data*; D000768:Anesthesia, General / Q000706:statistics & numerical data*; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D006801:Humans; D007297:Inpatients / Q000706:statistics & numerical data*; D008297:Male; D009407:Nerve Block / Q000706:statistics & numerical data*; D010525:Peripheral Nerves / Q000187:drug effects*