Andersen, Lasse Ø, Billy B Kristensen, Henrik Husted, Kristian S Otte, and Henrik Kehlet. 2008. “Local Anesthetics After Total Knee Arthroplasty: Intraarticular or Extraarticular Administration? A Randomized, Double-Blind, Placebo-Controlled Study”. Acta Orthopaedica 79 (6):800-805. https://doi.org/10.1080/17453670810016885.