title: A Risk Factor Out of Control: Commentary on an article by Alon Ben-Ari, MD, et al.: "Preoperative Opioid Use Is Associated with Early Revision After Total Knee Arthroplasty. A Study of Male Patients Treated in the Veterans Affairs System".
authors.affiliation: Division of Orthopaedic Surgery, Scripps Clinic, La Jolla, California.
authors.forename: Michael S
authors.initials: MS
authors.lastname: Reich
authors.forename: Richard H
authors.initials: RH
authors.lastname: Walker
mesh_terms: D019645:Arthroplasty, Replacement, Knee; D006801:Humans; D008297:Male; D020370:Osteoarthritis, Knee / Q000601:surgery; D012307:Risk Factors; D014728:Veterans