“One in 14 patients who use opioids before total hip or knee replacement surgery become persistent users during the year after their operation, according to a study published April 19 in Osteoarthritis and Cartilage,” reported Medscape this week. Using data from the United HealthCare/Optum Clinformatics Data Mart Database, researchers determined that about 87% of patients used opioids before surgery and 7.6% continued use one year after surgery. Full story.