Acetaminophen less effective than active treatments, injections and non-steroidal ant-inflammatory drugs for knee osteoarthritis

A study published this month in the Annals of Internal Medicine found that acetaminophen was significantly less effective than other treatments for knee osteoarthritis. They conducted randomized trials of adults with knee osteoarthritis using other treatments such as diclofenac, ibuprofen, naproxen, celecoxib, and injections of either corticosteroids, hyaluronic acid or placebo. (article link)